Comment 10 for bug 740854

Please try to obtain a backtrace following the instructions at https://wiki.ubuntu.com/DebuggingCompiz#Advanced%20Debugging and upload the backtrace (as an attachment) to the bug report. This will greatly help us in tracking down your problem.

It would also help greatly if you could tell us how to reproduce this crash. Attempts to reproduce it using the information given are not working.

Thank you for helping improve Ubuntu.