I can confirm this behavior with latest update: computer ran fine after it until I left my computer for lunch. When I came back, I found it "freezy" on the screensaver.
Rebooted (Ctrl+Alt+Print Sceen+B), used the computer for ten minutes and it freezed again when I resized a window. No Avant-Window-Navigator running at all. I was tracing syslog using ssh, here what the freeze gave me: Oct 13 15:30:49 gromit kernel: [ 2326.662649] NVRM: Xid (0002:00): 26, Ch 000001ff M 00001ffc D ffffffff intr ffffffff Then ssh server went down. I pressed ctrl+alt+print screen+A: the computer "unfreezed" and I got the logs attached ** Attachment added: "syslog" http://launchpadlibrarian.net/9965011/syslog -- random system freeze when desktop-effects activated with X300 (X600 and X700 too?) https://bugs.launchpad.net/bugs/115283 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs