Same thing was going on here. As it turns out, it was a pre-cursor to the phone giving me an "app loader error 507" or something along those lines. That happened while on vacation in NYC and I was dead in the water. No boot except to error screen. I used JL Commander and reloaded OS with my laptop and was back up and running but still get the uncaught exception once in a while. I am thinking a hardware problem brewing with mine.
uncaught exeption
Uncaught exception: Application net_rim_bb_messaging_app (234) is not responding; process terminated
