Originally posted by War
Well, since it's lagging you might want to try tuning the graphics down? Sometimes that helps. But since you said it started once you got the mouse, I don't know. Switch back to the other mouse and play the games, that way you will know if the only reason is your Deathadder. If it still lags, it could be the graphics card or some other component of the computer. One of my teachers plays WoW all the time and he got something new (can't remember exactly but it might be a mouse), but once he started playing WoW it lagged really bad, the cursor wouldn't move, and then crashed. He later found out that it was his graphics card that did it.
Edit: I don't think the mouse is the problem, I think that it's something else. You might want someone else's opinion though too, since I'm not really a computer expert.
yeah it works fine with the stock dell mouse... but thanks anyways