This may be related to a known issue with 3.0.0-18, which has bee fixed in 3.0.0-19.32[0]. Can you please upgrade your kernel and confirm this bug is resolved?
https://launchpad.net/ubuntu/oneiric/+source/linux/3.0.0-19.32 ** Changed in: linux (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974412 Title: System fails to boot after kernel upgrade to 3.0.0-18 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/974412/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs