I am getting the following messages when trying to run a virtual machine which has been running fine for days: 1. Your virtual machine may run slow because virtualization support is disabled on your Mac. 2. Your virtual machine will use only 1 CPU when running. 3. Unable to load the Parallels driver. Restart your Mac and try again. After restarting, the same messages appear. I can only fix this by uninstalling, restarting, and then re-installing Parallels. I am running version 6.0.12106 (latest according to the "check for updates" feature). Can anyone shed some light on this problem I am having?