Charging Problem

I get a display that says “connected” when its charged to my pc.  After some time there is no display.  Is this typical?  After several hours the mp3 is not charged and the pc was on the whole time.  What is wrong?

i use a wall plugin charger originally used for my ipod touch and it works great


i have the same problem and no i don’t have a charger that will work w my sansa…any other solutions?