Does anyone know why my iTouch completely crashes when WiFi is on? After a few minutes, while I'm either Surfing Safari Please Register or Log in to view images, listening to music, or watching videos, my iTouch shuts off with an audible "click". Kinda' feels like an overload, or power surge.??? The last image remains as a light imprint on the screen, then it slowly disappears, like wiping an Etch a Sketch from left to right. It only reboots once I connect it to a power source. This only happens when I'm connected to a WiFi network. I'm pretty sure it's not a virus, since supposedly Mac OS X, cannot get one. Or can it??? Anyone have any ideas???