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What is Ubuntu?
Ubuntu is an operating system built by a worldwide team of expert developers. It contains all the applications you need: a web browser, office suite, media apps, instant messaging and much more.
Ubuntu is an open-source alternative to Windows and Office.
The Ubuntu promise
* Ubuntu will always be free of charge, along with its regular enterprise releases and security updates
* Ubuntu comes with full commercial support from Canonical and hundreds of companies from across the world
* Ubuntu provides the best translations and accessibility features that the free software community has to offer
* Ubuntu core applications are all free and open source. We want you to use free and open source software, improve it and pass it on.
GNOME
Ubuntu 10.04 LTS RC includes the latest GNOME desktop environment with a number of great new features.
Linux kernel 2.6.32
Ubuntu 10.04 LTS RC includes the 2.6.32-21.32 kernel based on 2.6.32.11.
KDE SC 4.4
Kubuntu 10.04 LTS RC features the new KDE SC 4.4. For more information about new features in Kubuntu, see the Kubuntu technical overview.
HAL removal
This release fully removes HAL from the boot process, making Ubuntu faster to boot and faster to resume from suspend.
Major new version of likewise-open
The likewise-open package, which provides Active Directory authentication and server support for Linux, has been updated to version 5.4. The package supports upgrades from both the officially supported versions 4.0 (Ubuntu 8.04 LTS) and 4.1 (Ubuntu 9.10), as well as the likewise-open5 packages from universe.
Since this upgrade involves a lot of configuration file changes and in-place database upgrades, testing and feedback is appreciated.
New default open source driver for nVidia hardware
The Nouveau video driver is now the default for nVidia hardware. This driver provides kernel mode setting, which will give improved resolution detection. This driver provides hardware accelerated 2D functionality, like the -nv driver it replaces. The nouveau driver is being actively developed upstream and we anticipate this will enable faster bug fixes for problems encountered.
Improved support for nVidia proprietary graphics drivers
Three different NVIDIA proprietary drivers are currently available: nvidia-current (190.53), nvidia-173, and nvidia-96. Thanks to a new alternatives system, it is now possible to install all three of these packages at the same time (although it is only possible to have one configured for use at a time).
Social from the Start
We now feature built-in integration with Twitter, identi.ca, Facebook, and other social networks with the MeMenu in the panel, which is built upon the Gwibber project, which has a completely new, more reliable backend built on top of desktopcouch. Gwibber now also supports a multi-column view for monitoring multiple feeds simultaneously.
New boot experience
Multiple changes to look, feel and speed of the boot experience have been included in the Ubuntu 10.04 LTS Release Candidate.
New Indicators
The notification area now features more consistent user experience and design for communication, session management, and many other tasks. See the application indicators page for information on this change.
New Themes
The desktop has been beautified with the addition of two brand new themes, Ambiance and Radiance. New wallpaper and icons are also included.
Ubuntu One File Syncing
Select any folder in your home directory for sync, pick from your existing contacts when sharing folders. An updated preferences application has been added, with more features.
Ubuntu One Music Store
Millions of songs are available for purchase from your Ubuntu desktop, integrated with the Rhythmbox Music Player and using Ubuntu One cloud storage for backup and easy sync.
New features for Ubuntu Enterprise Cloud (UEC)
The Ubuntu Enterprise Cloud installer has been vastly improved in order to support alternative installation topologies. UEC components are now automatically discovered and registered, including for complex topologies. Finally, UEC is now powered by Eucalyptus 1.6.2 codebase.
Security Issue when upgrading from Lucid Alpha 2
If you installed Lucid prior to Alpha 3, you may have libmysqlclient16 7.0.9-1 installed. This package was present in the Ubuntu archive by mistake and was retracted, but because it has a later version number than the real libmysqlclient16 package, the real package will not be installed automatically on upgrade. To ensure that you have the official package installed on your Lucid system and will receive security support for it throughout Ubuntu 10.04 LTS, it is important that you run sudo apt-get install libmysqlclient16/lucid and follow the instructions.
Known issues
There are a small number of known bugs that users may run into with Ubuntu 10.04 LTS RC which will be fixed before the final release. We have documented them here for your convenience along with any known workarounds.
For a full list of errata for Ubuntu 10.04 LTS, please see the Ubuntu 10.04 LTS release notes.
LVM, RAID, or encrypted block devices are incorrectly limited to 2TiB. This issue will be resolved for the 10.04 LTS release. (543838)
In some cases, the partitioner will fail with the error message "Unable to satisfy all constraints" when using previously existing partitions. This bug will be resolved for the 10.04 LTS release; users encountering it are advised to wait for the fix in the final release. (558382)
Support for XFS and JFS is missing from the Ubuntu LiveCD. Users who need support for the XFS or JFS filesystems on their Ubuntu desktop at install time can install using one of the other installation media (Ubuntu alternate CD or Ubuntu DVD), or can wait for the final release of Ubuntu 10.04 LTS. (568024)
A memory leak in the X server's handling of 3D rendering will cause systems that use the default compiz window manager to become sluggish over time. This bug is being actively investigated and a resolution is expected for the final release of Ubuntu 10.04 LTS. (565981)
Help Spread the Word About Ubuntu 10.04 LTS
New banners are available for counting down the days until the Ubuntu 10.04 LTS release:
http://www.ubuntu.com/getubuntu/countdown
You can add the countdown banner to your website to help build excitement for the new release as the date approaches.
Participate in Ubuntu
If you would like to help shape Ubuntu, take a look at the list of ways you can participate at
http://www.ubuntu.com/community/participate/
More information
You can find out more about Ubuntu on the Ubuntu website and Ubuntu wiki.
To sign up for future Ubuntu development announcements, please subscribe to Ubuntu's development announcement list at:
http://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-announce
DOWNLOAD:
Local mirrors are also available:
Africa
* http://bw.releases.ubuntu.com/ (Botswana)
* http://ls.releases.ubuntu.com/ (Lesotho)
* http://mz.releases.ubuntu.com/ (Mozambique)
* http://na.releases.ubuntu.com/ (Namibia)
* http://sz.releases.ubuntu.com/ (Swaziland)
* http://ubuntu.mirror.ac.za/ubuntu-release/ (South Africa)
Asia
* http://ftp.mtu.ru/pub/ubuntu/releases/ (Russian Federation)
* http://mirror.yandex.ru/ubuntu-releases/ (Russian Federation)
* http://ubuntu.mirrors.isu.net.sa/releases/ (Saudi Arabia)
* http://ubuntutym2.u-toyama.ac.jp/ubuntu/ (Japan)
* http://ftp.linux.org.tr/ubuntu-releases/ (Turkey)
* http://ftp.yz.yamagata-u.ac.jp/pub/linux/ubuntu/releases/ (Japan)
Europe
* http://ftp.heanet.ie/pub/ubuntu-releases/ (Ireland)
* http://mirror.switch.ch/ftp/mirror/ubuntu-cdimage/ (Switzerland)
* http://ubuntu.mirror.tudos.de/ubuntu-releases/ (Germany)
* http://se.releases.ubuntu.com/ (Sweden)
* http://ubuntu.ipacct.com/releases/ (Bulgaria)
* http://nl.releases.ubuntu.com/releases/ (Netherlands)
North America
* http://mirror.anl.gov/pub/ubuntu-iso/CDs/ (United States)
* http://archaea.its.sfu.ca/mirror/ubuntu-releases/ (Canada)
* http://mirror.csclub.uwaterloo.ca/ubuntu-releases/ (Canada)
* http://ubuntu.cs.utah.edu/releases/ (United States)
* http://ubuntu-releases.cs.umn.edu/ (United States)
* http://www.gtlib.gatech.edu/pub/ubuntu-releases/ (United States)
Oceania/Australia
* http://ftp.citylink.co.nz/ubuntu-releases/ (New Zealand)
* http://mirror.ihug.co.nz/ubuntu-releases/ (New Zealand)
* http://ubuntu-releases.optus.net/ (Australia)
South America
* http://ubuntu.c3sl.ufpr.br/releases/ (Brazil)
* http://espelhos.edugraf.ufsc.br/ubuntu-releases/ (Brazil)
* http://www.las.ic.unicamp.br/pub/ubuntu-releases/ (Brazil)
FINAL VERSION:
What is Ubuntu?
Ubuntu is an operating system built by a worldwide team of expert developers. It contains all the applications you need: a web browser, office suite, media apps, instant messaging and much more.
Ubuntu is an open-source alternative to Windows and Office.
The Ubuntu promise
* Ubuntu will always be free of charge, along with its regular enterprise releases and security updates
* Ubuntu comes with full commercial support from Canonical and hundreds of companies from across the world
* Ubuntu provides the best translations and accessibility features that the free software community has to offer
* Ubuntu core applications are all free and open source. We want you to use free and open source software, improve it and pass it on.
GNOME
Ubuntu 10.04 LTS RC includes the latest GNOME desktop environment with a number of great new features.
Linux kernel 2.6.32
Ubuntu 10.04 LTS RC includes the 2.6.32-21.32 kernel based on 2.6.32.11.
KDE SC 4.4
Kubuntu 10.04 LTS RC features the new KDE SC 4.4. For more information about new features in Kubuntu, see the Kubuntu technical overview.
HAL removal
This release fully removes HAL from the boot process, making Ubuntu faster to boot and faster to resume from suspend.
Major new version of likewise-open
The likewise-open package, which provides Active Directory authentication and server support for Linux, has been updated to version 5.4. The package supports upgrades from both the officially supported versions 4.0 (Ubuntu 8.04 LTS) and 4.1 (Ubuntu 9.10), as well as the likewise-open5 packages from universe.
Since this upgrade involves a lot of configuration file changes and in-place database upgrades, testing and feedback is appreciated.
New default open source driver for nVidia hardware
The Nouveau video driver is now the default for nVidia hardware. This driver provides kernel mode setting, which will give improved resolution detection. This driver provides hardware accelerated 2D functionality, like the -nv driver it replaces. The nouveau driver is being actively developed upstream and we anticipate this will enable faster bug fixes for problems encountered.
Improved support for nVidia proprietary graphics drivers
Three different NVIDIA proprietary drivers are currently available: nvidia-current (190.53), nvidia-173, and nvidia-96. Thanks to a new alternatives system, it is now possible to install all three of these packages at the same time (although it is only possible to have one configured for use at a time).
Social from the Start
We now feature built-in integration with Twitter, identi.ca, Facebook, and other social networks with the MeMenu in the panel, which is built upon the Gwibber project, which has a completely new, more reliable backend built on top of desktopcouch. Gwibber now also supports a multi-column view for monitoring multiple feeds simultaneously.
New boot experience
Multiple changes to look, feel and speed of the boot experience have been included in the Ubuntu 10.04 LTS Release Candidate.
New Indicators
The notification area now features more consistent user experience and design for communication, session management, and many other tasks. See the application indicators page for information on this change.
New Themes
The desktop has been beautified with the addition of two brand new themes, Ambiance and Radiance. New wallpaper and icons are also included.
Ubuntu One File Syncing
Select any folder in your home directory for sync, pick from your existing contacts when sharing folders. An updated preferences application has been added, with more features.
Ubuntu One Music Store
Millions of songs are available for purchase from your Ubuntu desktop, integrated with the Rhythmbox Music Player and using Ubuntu One cloud storage for backup and easy sync.
New features for Ubuntu Enterprise Cloud (UEC)
The Ubuntu Enterprise Cloud installer has been vastly improved in order to support alternative installation topologies. UEC components are now automatically discovered and registered, including for complex topologies. Finally, UEC is now powered by Eucalyptus 1.6.2 codebase.
Security Issue when upgrading from Lucid Alpha 2
If you installed Lucid prior to Alpha 3, you may have libmysqlclient16 7.0.9-1 installed. This package was present in the Ubuntu archive by mistake and was retracted, but because it has a later version number than the real libmysqlclient16 package, the real package will not be installed automatically on upgrade. To ensure that you have the official package installed on your Lucid system and will receive security support for it throughout Ubuntu 10.04 LTS, it is important that you run sudo apt-get install libmysqlclient16/lucid and follow the instructions.
Known issues
There are a small number of known bugs that users may run into with Ubuntu 10.04 LTS RC which will be fixed before the final release. We have documented them here for your convenience along with any known workarounds.
For a full list of errata for Ubuntu 10.04 LTS, please see the Ubuntu 10.04 LTS release notes.
LVM, RAID, or encrypted block devices are incorrectly limited to 2TiB. This issue will be resolved for the 10.04 LTS release. (543838)
In some cases, the partitioner will fail with the error message "Unable to satisfy all constraints" when using previously existing partitions. This bug will be resolved for the 10.04 LTS release; users encountering it are advised to wait for the fix in the final release. (558382)
Support for XFS and JFS is missing from the Ubuntu LiveCD. Users who need support for the XFS or JFS filesystems on their Ubuntu desktop at install time can install using one of the other installation media (Ubuntu alternate CD or Ubuntu DVD), or can wait for the final release of Ubuntu 10.04 LTS. (568024)
A memory leak in the X server's handling of 3D rendering will cause systems that use the default compiz window manager to become sluggish over time. This bug is being actively investigated and a resolution is expected for the final release of Ubuntu 10.04 LTS. (565981)
Help Spread the Word About Ubuntu 10.04 LTS
New banners are available for counting down the days until the Ubuntu 10.04 LTS release:
http://www.ubuntu.com/getubuntu/countdown
You can add the countdown banner to your website to help build excitement for the new release as the date approaches.
Participate in Ubuntu
If you would like to help shape Ubuntu, take a look at the list of ways you can participate at
http://www.ubuntu.com/community/participate/
More information
You can find out more about Ubuntu on the Ubuntu website and Ubuntu wiki.
To sign up for future Ubuntu development announcements, please subscribe to Ubuntu's development announcement list at:
http://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-announce
DOWNLOAD:
Local mirrors are also available:
Africa
* http://bw.releases.ubuntu.com/ (Botswana)
* http://ls.releases.ubuntu.com/ (Lesotho)
* http://mz.releases.ubuntu.com/ (Mozambique)
* http://na.releases.ubuntu.com/ (Namibia)
* http://sz.releases.ubuntu.com/ (Swaziland)
* http://ubuntu.mirror.ac.za/ubuntu-release/ (South Africa)
Asia
* http://ftp.mtu.ru/pub/ubuntu/releases/ (Russian Federation)
* http://mirror.yandex.ru/ubuntu-releases/ (Russian Federation)
* http://ubuntu.mirrors.isu.net.sa/releases/ (Saudi Arabia)
* http://ubuntutym2.u-toyama.ac.jp/ubuntu/ (Japan)
* http://ftp.linux.org.tr/ubuntu-releases/ (Turkey)
* http://ftp.yz.yamagata-u.ac.jp/pub/linux/ubuntu/releases/ (Japan)
Europe
* http://ftp.heanet.ie/pub/ubuntu-releases/ (Ireland)
* http://mirror.switch.ch/ftp/mirror/ubuntu-cdimage/ (Switzerland)
* http://ubuntu.mirror.tudos.de/ubuntu-releases/ (Germany)
* http://se.releases.ubuntu.com/ (Sweden)
* http://ubuntu.ipacct.com/releases/ (Bulgaria)
* http://nl.releases.ubuntu.com/releases/ (Netherlands)
North America
* http://mirror.anl.gov/pub/ubuntu-iso/CDs/ (United States)
* http://archaea.its.sfu.ca/mirror/ubuntu-releases/ (Canada)
* http://mirror.csclub.uwaterloo.ca/ubuntu-releases/ (Canada)
* http://ubuntu.cs.utah.edu/releases/ (United States)
* http://ubuntu-releases.cs.umn.edu/ (United States)
* http://www.gtlib.gatech.edu/pub/ubuntu-releases/ (United States)
Oceania/Australia
* http://ftp.citylink.co.nz/ubuntu-releases/ (New Zealand)
* http://mirror.ihug.co.nz/ubuntu-releases/ (New Zealand)
* http://ubuntu-releases.optus.net/ (Australia)
South America
* http://ubuntu.c3sl.ufpr.br/releases/ (Brazil)
* http://espelhos.edugraf.ufsc.br/ubuntu-releases/ (Brazil)
* http://www.las.ic.unicamp.br/pub/ubuntu-releases/ (Brazil)
FINAL VERSION:
