I have a 1G iPod Touch 8 Gig with the 2.2 software. Last night after being charged with my computer (Macbook with OS X 10.5) it turned off and will not turn back on. It will not recognize or show up in iTunes when I connect it to my computer. I have tried resetting it with the Home and Sleep/Wake buttons, but nothing seems to work. I have also re-downloaded iTunes, and restarted my computer. Also, I have connected it to an AC adapter and other USB ports. Does anyone have any suggestions??