Mine is a little sticky.
Mine seems to stick a little if I don't press it right in the center. If I hit it on the ends, it sometimes sticks a little bit. Took it back to Radio Shack where I bought it and they acted like I was abusing it or something. They sprayed some contact cleaner on it. It seems little better now, but I'm trying to be very careful when I press it and also very gentle. I am keeping an eye on it and we'll see. The HTC Evo I exchanged for this one was even worse. I think Radio Shack just didn't want to exchange another phone for me after I returned the Evo, plus they probably already knew the Galaxy S II was coming out. Oh, well, I do like this one a lot. It is a replacement for my trusty but over crowded Optimus V.