Interesting keyboard binding question for you:
One of my users has a laptop. When he presses either the 'q' or 'w' key, an 'e' is added to the end of them. For example: q = qe , w = we
This only occurs with those two keys though...I've checked the mapping, everything looks normal. I thought it was perhaps a function key combination that he enabled somehow, but I can't find the switch to turn it off.