Damn...time and time again early adopters are getting screwed...when will it stop? :|
You can hate on HTC all you want, but believe me, there are serious quality issues with just about every phone made by anyone, even Apple...Sometimes the issues are big enough to hit front page when people are talking about it for a day or so, but lot of times you won't even hear about them because they'll get fixed so fast...it's just cheaper for them to get the device out there than it is sitting on it perfecting the software \ hardware...but that's just the way the industry goes I guess, it's all about getting the product to market.
You can tell just by looking at the teardown photo that there's literally _no_ adhesive in the lower left corner, and that's why the screen is lifting...
One more thing, I know the guy who posted about the clamp \ hairdryer probably meant well, but don't bother with that unless you have no other options left. Take the phone back, even twice or three times if you have to, until you get a good one. It's a pain in the ass to go through that process, but make them (whoever you bought the phone from) see it that way...raise a stink, cause some hell...link to this thread, the engadget article, the htc community forums...do what ya gotta do to get hooked up

Mention the iPhone and threaten to switch to AT&T lol