I have an ATI video card installed and have the Catalyst 12.4 video drivers installed everything has been working fine until I updated my system on Tuesday. Now when when I try and play videos the whole system freezes after a few seconds. I end up having to reboot the machine each time. The system works just fine up until this point. This is the list of all the updates I did:
Start-Date: 2012-06-05 16:37:56
Commandline: aptdaemon role='role-commit-packages' sender=':1.168'
Upgrade: libpolkit-backend-1-0:amd64 (0.104-1, 0.104-1ubuntu1),
libgl1-mesa-dri:amd64 (8.0.2-0ubuntu3, 8.0.2-0ubuntu3.1),
libgl1-mesa-dri:i386 (8.0.2-0ubuntu3, 8.0.2-0ubuntu3.1),
libgl1-mesa-glx:amd64 (8.0.2-0ubuntu3, 8.0.2-0ubuntu3.1),
libgl1-mesa-glx:i386 (8.0.2-0ubuntu3, 8.0.2-0ubuntu3.1),
libpolkit-gobject-1-0:amd64 (0.104-1, 0.104-1ubuntu1),
libglapi-mesa:amd64 (8.0.2-0ubuntu3, 8.0.2-0ubuntu3.1),
libglapi-mesa:i386 (8.0.2-0ubuntu3, 8.0.2-0ubuntu3.1),
policykit-1:amd64 (0.104-1, 0.104-1ubuntu1),
update-manager:amd64 (0.156.14.4, 0.156.14.5),
update-manager-core:amd64 (0.156.14.4, 0.156.14.5),
ssl-cert:amd64 (1.0.28, 1.0.28ubuntu0.1),
libpolkit-agent-1-0:amd64 (0.104-1, 0.104-1ubuntu1),
libglu1-mesa:amd64 (8.0.2-0ubuntu3, 8.0.2-0ubuntu3.1),
libglu1-mesa:i386 (8.0.2-0ubuntu3, 8.0.2-0ubuntu3.1)
End-Date: 2012-06-05 16:38:50