Well, got tired of the issues with the stock rom (random calls I did not make, phone lockups, battery issues) 2.1 with recovery and root, so I decided last night to reflash it with stock and use the radioactive froyo firmware 1.7.1 from SDX. Everything was fine last night. This morning I've had it lock up on me 3 times. Every time it happens after I hit the end button to turn off the screen. The screen doesn't come back up. I just want a working phone?! Is that too much to ask Samsung and Sprint?!