Could you please include attach a copy of /var/log/kern.log to this bug report using its web page?
It is unlikely that it's the bcm43xx driver, as it manages to restart the controller correctly. It could be a memory problem, in which case following the instructions at https://help.ubuntu.com/community/MemoryTest should indicate something. Thanks. ** Changed in: linux-source-2.6.17 (Ubuntu) Assignee: (unassigned) => Simon Law Status: Unconfirmed => Needs Info -- [edgy regression] bcm43xx driver locks up my powerpc system after 1 hour https://launchpad.net/bugs/62805 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs