I've had mine in charge mode connected to my pc most of the day except for lunch, when I went out. It has only charged to 60% whereas my Moto Droid would charge to 100% in less than 2 hours.
So yes, mine is charging slow too.
Very similar and disturbing experience. The Original Droid was at 100% at the end of a full day charging off my laptop. I really need to have that back, and can't understand why that can't be and should not be done.