I have same problem and i found this message at time of crash in /var/log/syslog
Aug 1 23:02:24 pavel-Aspire-3690 kernel: [17549.805012] compiz[9160]: segfault at 40 ip 0053e341 sp bf988b38 error 4 in libc-2.13.so[4ce000+15b000]
I have same problem and i found this message at time of crash in /var/log/syslog
Aug 1 23:02:24 pavel-Aspire-3690 kernel: [17549.805012] compiz[9160]: segfault at 40 ip 0053e341 sp bf988b38 error 4 in libc-2. 13.so[4ce000+ 15b000]