This appears to be the same as I am experiencing on my Dell X200.
Frequent lockups unless I have external USB mouse attached. Never locks
with external mouse attached. Have seen frequent mentions about this
problem on Ubuntu. It seems to have gotten the brush off instead of
being taken seriously.
** Attachment added: Dependencies.txt
http://launchpadlibrarian.net/10292203/Dependencies.txt
** Attachment added: ProcMaps.txt
http://launchpadlibrarian.net/10292204/ProcMaps.txt
** Attachment added: ProcStatus.txt
http://launchpadlibrarian.net/10292205/ProcStatus.txt
--
Mouse
Thank you for your comments. This does not appear to be a bug report and
we are closing it. We appreciate the difficulties you are facing, but it
would make more sense to raise your question in the support tracker.
https://answers.launchpad.net/ubuntu
** Changed in: yelp (Ubuntu)
Status: