Pretty much as the title says...I've done quite a few tweaks/changes to my phone but none of them seemed to have any adverse effects (extra camera modes, removed some of the T-mobile branding, added SPB Time [which I had a few crashes with the screensaver] skyfire, opera beta, flash lite, Advanced configuration tool (I may have changed a couple things to enhance battery life and fix some things I didn't like)
Well today while at work I go to look at my phone (first time [maybe 10am?] I looked at it since the alarm woke me up this morning and I dismissed it) and I get this pretty little screen "Stick Together" w/ a line through it and the gibberish code at the bottom. Of course it's just stuck there doesn't move at all; I tried removing the battery for half an hour - still nothing, I tried the reset button on the side - still nothing, I even tried a Master Reset (held down send while power on...) - still nothing. Called T-mobile and they're sending me a new phone but because I am right outside their "Buyer's remorse" period I have to wait for a new TP2 to come via UPS and in the mean time get some loaner phone (which I'm sure will be awful).
Let me also add that when it came out of my pocket it was warm like it had been charging but not all that hot. Also you can see the lack of scratch resistance of the screen protector (that was from the stylus with not a lot of pressure).