Has anyone else noticed that their Xbox controllers have lost some responsiveness? I noticed that while playing Splinter Cell today that I had to hit the A button pretty hard to get it to take, while I can remember it responding to a very slight tap before. Now the controller saw a lot of (ab)use with Tony Hawk 4, which does involve holding that particular button down quite a lot, but this is the first time I've really noticed something like this. I can't say that I've ever broken a controller through normal use (hell, my original NES controllers still work), so is this just the overall fragility of the Xbox sticks? I mean I've had them since a month after launch, but that's still no excuse.