So I recently bought a new 20 gig ipod, got it all setup, been transferring songs onto it and all with ease except when I charge it it barely charges, even when I connect it to the computer for 6+ hours. Now, I have a sony vaio which has 4 USB ports but none of them are hi-speed, which apparently the cable was made for, although it doesn't make much sense for my ipod to not be charging... am I missing something?