iPhone 3GS 32GB touch screen randomly stops/starts working
A great example of the problem is when I'm playing some game (Tap Tap Revenge for example). I'll be touching the screen literally hundreds of times, and then it will stop responding. Sometimes it begins working again quickly, but other times I need to lock/unlock it for it to work again (though, the lock/unlock might not have any effect-- maybe it's just the added time of doing it that allows the screen to work again).
Of note, the iPhone operates normally in all other functions (ie. the phone doesn't lockup, and applications continue running normally, I just can't tough anything).
Someone else posted something I thought was a similar problem, but they said turning off notifications would solve it, though it hasn't helped at all for me.
Anybody else having this problem?
iPhone 3GS 32GB BLACK, iPhone OS 3.0