I experienced the same problem signature in Natty after I installed Steam through PlayOnLinux (after logging in). I'm using the experimental FOSS 3D nVidia drivers, if that matters.
Yeah, I know... that's quite the stack of "bleeding edge/unstable" software. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/729504 Title: compiz crashed with SIGSEGV in pthread_mutex_lock() -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
