Comment 3 for bug 187817

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 [WWW] 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, as well as the other related problems.

Also, are you running this upgrade on a single core, multiple core, or virtual machine?