iPod won't turn off when plugged into computer! PLZ HLP!

If that is the only "problem" you are having I would not be concerned.

Let's try again. If I recall, that's normal. Is there a specific reason you need to have it off when it's plugged in? It won't hurt it to have it on.

If you are unable to give specifics about the problem or what you need to do, it's going to be rather hard to give you recommendations or alternate suggestions.

As I said, if I recall correctly, the iPod will stay on if it's being charged. But, in case I'm misremembering, are you holding down the button until you see the red arrow that says "Slide to power off"? Have you tried restoring it?