Comment 76 for bug 468589

dino99,

I know it is the same subject, but the cause is different. Therefore, the fix is different. Also, there is a subtle difference between your problem and everyone else's problem in this bug report: your session actually ends, while theirs did not. Please file a new bug report. File it as a grub bug, and note in the subject line that both Ubuntu and Windows can not seem to reboot properly.