Comment 2 for bug 298305

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please try to obtain a backtrace following the instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload the backtrace (as an attachment) to the bug report. This will greatly help us in tracking down your problem.

The update you are testing is not an official update but a candidate one, it's getting testing now, don't use those versions if you don't want to do testing