I never find anything in /var/crash so I cannot comply with u sorry this is most depressing, don't know how to proceed, I have had some success restarting gdm:
$ sudo service gdm restart but I really need to get to the bottom of the lockup -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/783993 Title: unity freezing periodicly -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
