Seem likely to be similar/same issue here, only I'm only using the Radeon driver with my Ati HD4200 gpu.
As I was initiating irc broadcast account - popup causing crash seem likely. Freshly upgraded to 11.04 from 10.10 (and all way back to Karmic!) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/756753 Title: compiz crashed with SIGSEGV in __kernel_vsyscall() -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
