I'm having this annoying problem, and I've tried searching for it extensively but can't figure out the right words and don't find anything.
Every once in a while, when I wake up my HD2, my screen is black, but it's not the screen of death. I can see my notification bar and can pull it down without a problem, but the entire rest of the screen is black. Sometimes if I hit the menu button I can see the menu pop up at the bottom and can click on it. Anything I open briefly shows up for a second with the opening animation but opens sort of like it's behind the black screen. Then if I hit home, I still can't see my background. Usually after 5 or so minutes of hitting home, menu, settings, home, repeatedly the black screen will finally go away, but it often takes VERY long to get out of and it's getting annoying.
Bangsters runs amazingly well for me. The only other annoyance is that if I restart my phone for any reason, such as my battery dying, I get the screen of death if the screen goes to sleep early after booting into Android. I have to mess with the phone opening apps and different menus for a while before letting the screen go to sleep to prevent this.