Guys,
That's interesting. I wonder if keymapping is affected somehow? I had a thought, try the demo of this program:
http://www.qoolapps.com/QCaps.html
Even if you don't desire to use the functionality of the program, just install it, and type as you normally would -- There's a chance that it fix the problem. Or at least, provide a workaround...
Or, if that doesn't work, try to remap the keys that are giving you trouble with this program -- simply over-write the letter key with the same letter.... Use this software
http://ae.inc.ru/aebplus.php, with this tutorial, if you want:
http://discussion.wmexperts.com/showthread.php?t=137112
Keep us updated,
Matt!