sorry to hear this. i have about 230 on my pearl i havnt experienced this. however i did have a problem with the track ball, almost like it was super sensative would do all kinds of wierd things. luckily sprint gave me a new one.
I've had a few random reboots in the past few days. It rebooted each time I tried to read a new email with Empower. I ended up deleting Empower. We'll see what happens.