I also had the same problem after reinstalling Ubuntu 12.04. When I was connected to Ethernet it was fine, but as soon as I switched to WiFi kernel panic occurred. I am attaching the screenshot.
** Attachment added: "photo(1).JPG" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1249643/+attachment/3917741/+files/photo%281%29.JPG -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1249643 Title: Kernel Panics To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1249643/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs