OC may come at a cost?
Interestingly, I've never had a problem quite like this on on this phone until I flashed this kernel:
Was on the phone for an extended amount of time, the screen blanked, and when I went to hang up, I couldn't - screen wouldn't turn back on. Pressed the power button a few times, shook the phone, nothing.
The issue looked very similar to the infamous "CM7 SOD" issue, except my phone couldn't have gone to sleep while being on the phone (right?).
I had to do a battery pull and reboot.