I notice you have virtualbox-ose installed, does the freezing still occur with that uninstalled?
** Description changed: Binary package hint: xserver-xorg-video-ati The system freezes sporadicly (four or five times in three days). The screen goes white, purpe, or shows another pattern. The system does not react on the sysrq keys. ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: xserver-xorg-video-ati 1:6.12.192-2ubuntu2 ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1 Uname: Linux 2.6.32-19-generic x86_64 Architecture: amd64 Date: Thu Apr 8 00:43:26 2010 DkmsStatus: virtualbox-ose, 3.1.4, 2.6.32-19-generic, x86_64: installed InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100318) ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-19-generic root=UUID=084f66b9-41ed-4f11-968c-083da82522ce ro quiet splash ProcEnviron: - PATH=(custom, user) - LANG=de_DE.utf8 - SHELL=/bin/bash + PATH=(custom, user) + LANG=de_DE.utf8 + SHELL=/bin/bash SourcePackage: xserver-xorg-video-ati dmi.bios.date: 07/15/2009 dmi.bios.vendor: Intel Corp. dmi.bios.version: DPP3510J.86A.0572.2009.0715.2346 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: DG33TL dmi.board.vendor: Intel Corporation dmi.board.version: AAD89517-802 dmi.chassis.type: 3 dmi.modalias: dmi:bvnIntelCorp.:bvrDPP3510J.86A.0572.2009.0715.2346:bd07/15/2009:svn:pn:pvr:rvnIntelCorporation:rnDG33TL:rvrAAD89517-802:cvn:ct3:cvr: glxinfo: Error: [Errno 2] No such file or directory system: - distro: Ubuntu - codename: lucid - architecture: x86_64 - kernel: 2.6.32-19-generic + distro: Ubuntu + codename: lucid + architecture: x86_64 + kernel: 2.6.32-19-generic + + [lspci] + 00:00.0 Host bridge [0600]: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller [8086:29c0] (rev 02) + Subsystem: Intel Corporation Device [8086:5044] + 01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV730XT [Radeon HD 4670] [1002:9490] + Subsystem: Hightech Information System Ltd. Device [1787:2268] ** Summary changed: - sporadic freezes + [RV730XT] sporadic freezes ** Changed in: xserver-xorg-video-ati (Ubuntu) Status: New => Incomplete -- [RV730XT] sporadic freezes https://bugs.launchpad.net/bugs/557688 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp