Very similar to the problem posted, but my system was just fine when using 10.04. it was only when I updated to 10.10 that the freezes started.
There is a forum thread with a number of people who have the same problem describing their hardware. the URL is http://ubuntuforums.org/showthread.php?p=10029746#post10029746 . The logs dont show anything useful. From my observation the freeze strikes wheneven on battery and any power related activity occurs, like insertion of USB drive, switching on wi-fi etc. -- System freezes when battery powered https://bugs.launchpad.net/bugs/605967 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs