My 4-wk-old 40G iPod froze today in charge mode. It was charging via a power outlet, not via the computer. The screen froze while showing one charge "unit" (lightningbolt-thingy). Up until then, it ran completely normally. I searched the forum for iPod problems, and found a tip that said an iPod could be reset by holding in menu and play at the same time, and sure enough, it worked. Now it seems to work normally again. But - - has anyone else experienced this, and does anyone know what causes it?