Hello! I have a late 2010 Macbook Air with OS X Lion 10.7.4. I've been trawling the internet for a solution to my problem, but I just can't find any mention of this problem anywhere. Then again, I do stink at finding stuff. My problem is this: Keyboard keys, like for instance W, S, A and D, tend to hang in-game after I've released them when I play certain games on my Air. So the button does not physically stay depressed, but my Air thinks that it is. Clear enough? -English is not my native language. So far I have witnessed this behaviour in Source games (like Half-Life 2, Half-Life 2 Episode 2, Portal 1 & 2) and in Minecraft. These are the Mac versions of said games. Curiosly I have not encountered any problems like these while playing games through Wine (Crossover). -or in Bootcamp. I've tried different maintenance methods to combat this problem but nothing has helped. Repairing disk permissions, resetting the SMC, cleaning with CCleaner...basically the kitchen sink method of problem solving. Have any of you had the same problem? Any suggestions for potential solutions?