I have a similar problem when the compiz 'reflection' effect is enabled. I started having freezes upon using Karmic and turned of all compiz effects at that time. I have since been enabling some effects and this one seems to be the culprit.
It's not particularly important to me, but it is a bug. -- periodic system freezes when using octaviz with Compiz enabled https://bugs.launchpad.net/bugs/304208 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs