Keyboard acting funny...

HelloMy keyboard has been acting funny lately.
While I play a game such as, let's say Minecraft, when I press W, A, S, or D, or even Shift (pretty much any key) there is always a chance that I will continue to do that action even when i release my finger from the key.Like if I press D to walk backwards, and I let go of D, my character will continue to move forward.
I know for a fact that this is not a problem with the keyboard, since I bought a new keyboard a few days ago and the same things happens to that keyboard as well.Help?
I think I could be a problem with the Minecraft 1.3 release but I havent heard any other accounts of this happening.Thank you for any assistance.

Come on...Not a single guess on what's going on?

Gee, check if any background app/service is using the keyboard resources: Hot key commands, short cut key commands, is sticky keys switched off?
Also try check the game's keyboard settings option. Maybe something's not set up right there. If not then it may be a Minecraft game bug if other games work okay. Just a guess though
(btw this should be moved to Non-Emulation Help board)