djkokalis,
20 hrs to copy 2GB of data is not normal at all. What I suggest is try connecting your player into ANOTHER computer. It might be computer related. If that is still slow, then try another USB cable if you have one that is similar.
These players don't do multitasking, so that explains why you can't do something else while you are listening to music.
3 and a half hours sounds normal. Are you listenin to music non-stop durin that time? What you can do is change the display setting to go black when you are listening to music. This will save battery, simliar to a laptop going into a black screen if you are not using it for awhile to save battery.
Don't try another firmware as it will most likely 'kill' your player and will void a possible chance to get your replaced.
Definately try another computer and USB cable if you can as it shouldn't take that long to transfer 2GB of data. Have you formatted your player?
You should act on this fast as if it's a fault, then you can probably get a refund or replacement for the USB issue.
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