Comment 3 for bug 562811

I believe this is the same problem I'm experiencing. I have not found a solution and must reinstall Ubuntu. I notice that before the killer-reboot there are several other symptoms (perhaps red herrings). The first one was a XKB error, and now I am having a strange issue where modal windows (e.g. the Edit Connections or Reboot windows) display nothing in the form, but just the window border and titlebar. I also noticed that while I could connect to wireless networks, no data would be transmitted (as far as I could tell. Ping tests failed without even sending anything (host unknown error)). These symptoms did not appear except when rebooting resulted in the (seemingly) infinite loop of failed fsck checks.