I have the 8350i for almost a year without any problems. I use my BB with a Holster and a pair of headphones to jog, but it recently started crashing and rebooting itself repeatedly, it only happens when I have it on the Holster and with headphones.
I have v4.6.1.204 installed, tried wipe out and reloading the v4.6.1.204, without success,
when you jog, do you sweat alot, i know I do. My sweating had damaged a couple of ipod nanos. Im very careful with it now, this could be the problem that you're having with the blackberry. My nanos started presenting similar problems and just shorted out...that's the only thing that I can think of considering your post....