ah, well I guess when I looked at your name if I had looked 3/4 an inch to the right I would have seen it was a sprint... adn you said using Titanium and messaging I read Titanium and Manilla... My bad. its late and the margaritas have been flowing since about 5:00 this evening.
as to the random closing... couldnt tell you. Sorry. just hit the Home key on mine and Opera is still running in the task manager...
on MIne to Hard reset I hold the Center OK buton while tapping the reset with tthe stylus and that Hard resets... seems some phones use that, what you are trying, some need the OK button, Vol Down and power while hitting reset with stylus... its kinda a crap shoot there...
Sorry. But if you check back tomorrow BMX should be rolling out a new ROM with these issues fixxed and a few better features.