Wirelessly posted (BlackBerry8703e/4.2.1 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/105)

I think it isn't reception persay, but a problem with the radio or radio driver. I notice that the only time it has rebooted is when I've received a message or updating my RSS feeds in Viigo, or the BlackBerry is handing off between 1x and EV modes.

Strange, but I'm hoping to upgrade to either the 8830 or 8130 sometime soon.