[Tybalt39]

If you go the powered hub route, make certain the power supply has at least 500ma capacity. More would be better... I regularly use a charger with 1000ma (1A) capacity to charge my TP2. The less current available, the longer it takes to charge.

As to the computer standby issue, some computers keep the USB ports active in standby, some don't. If active, it's not surprising the current capacity is reduced as the PC is just looking for an input in order to "wake-up" (ie: keyboard or mouse input signal). Try charging when the computer is "awake". Also, what is the battery capacity of the Fuze and Zune (mah)? If they are substantially less than the TP2 battery (approx 1000mah iirc), that could help explain the different charging periods.