Well how long, i've been charging mine for quite a while now and its till not done. It owuld be nice to know what its like from other people before i ring Apple and tell them i feel the battery is duff.
My iPod seems to be fully charged in about 3 hours, but I think that the manual says that it takes 4 hours to charge fully, but that's probably an overestimate take note that I have an old model 5 gig iPod.
I have a new 10 gig and I charged it for about 4 hours the other day, and it was fully charged. I've listened to it on and off since then, and I still haven't had to charge it.