hmm, crash dump seems to have some similarities with crash dump in bug #71501. I'm afraid that this doesn't contain enough information to solve this problem.
Could you try to obtain debug traces if you can reproduce this. Instructions how to do this can be found in: https://wiki.ubuntu.com/DebuggingProgramCrash -- crashed playing computer https://launchpad.net/bugs/79342 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
