http://oi57.tinypic.com/2lsuwli.jpg
booted my computer up and got this promptly after the "tablet driver not working" error message I get every day when I boot the computer up regardless if the tablet is plugged in or not.
I've emailed Wacom Support about this and they have no fix I get told to do what I've always been doing to fix it since when this happens all sensitivity dies so I go to services and stop and restart the wacom driver manually.
Link
GuberNudel
That's why I stopped using a wacom tablet. Sorry it's happening to you too.