I thought this may help. The log entries from 10:30-10:40 (in that range) should be from the new kernel that would not boot. Btw, the system just freezes with the progress bar stuck with about 1 pixel of the bar filled - no panic or anything else ever shows - system is frozen. Num lock, caps lock keys, etc. are unresponsive.
** Attachment added: "Kernel.log" http://librarian.launchpad.net/6853507/kern.log -- Kernel 2.6.20-12-generic - won't boot https://launchpad.net/bugs/93574 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs