Thank you for reporting this to Ubuntu. Could you please generate an apport
crash report for this?
You can enable apport for one instance like this:
sudo service apport start force_start=1
I am marking this invalid as apport will open a new bug when the crash
is generated. If it does not, you can
Thank you for taking the time to report this bug and helping to make
Ubuntu better. This bug did not have a package associated with it, which
is important for ensuring that it gets looked at by the proper
developers. You can learn more about finding the right package at
https://wiki.ubuntu.com/Bug