My last comp had an issue with the D key as well. I couldn't ever move backwards, right, and tele at the same time, and I think it had to do with the D key because it worked with A going left. It really is annoying, but you learn to get around it. It isn't an ESF thing, it's a ... some other thing. To test it, go to your desktop or to a word program and try holding S, D, shift, space, and something else. You *should* get a beeping sound coming from your computer after a little while because it can't process that many commands.