Sounds like what happened to me only I was using mplayer. It has happened to me many times (once a week it feels like).
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/543854 Title: System freezes while playing movie in totem Status in “xserver-xorg-video-nouveau” package in Ubuntu: Confirmed Bug description: Binary package hint: xserver-xorg-video-nouveau Lucid beta1, up to date as of March 21st. I was playing a movie full screened in totem. I played it from the beginning, occasionally skipping ahead to interesting parts. I was probably playing the video for about a half hour. The video froze completely and the system was totally unresponsive. Could not switch to tty1, could not ctl-alt-del, nothing. Had to power down the system. The sound from the video kept playing for about 20 seconds, then stopped. This has happened on two occasions, with two different movies and it never happened in any other release (like, when i wasn't using nouveau). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/543854/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

