On my imac at home the 2, W, S and X keys don't work at all. I have this keyboard: http://store.apple.com/us/product/MB110LL/A I plugged another keyboard in and it works perfectly. Is there anyway I can fix this or do I have to dish out $50 for a new one? The reason I want to keep the apple one is because I like the USB hubs. I tried rebooting, logging into a different account and spraying it with a can of air. Thanks.