Everyone who has this problem, take it back. There's a free program in the App Market called Multitouch Test. I ran it and could see what's happening -- when I touch with two fingers, the screen doesn't know I let go of one of the fingers. I'm thinking HTC shipped a batch of problem devices. I took mine back and got a replacement and this one is fine. Mine came from Best Buy in Toledo, Ohio. And Greg, it sounds like the replacement you got was from the same batch as well, so definitely take that one back too.