Why does iTunes re-open after I quit the app? Whenever I quit iTunes, it restarts itself. I have iTunes 10.1.12 (the newest one) installed on my Mac.  I don't remember exactly when it started—with either version 10 or 10.1.

Is there any solution to this?

ADDED

It was caused by the GimmeSomeTune, after reinstalling it, everything seems to working fine.
I used to have this problem when I had SRS iWow installed in iTunes. Is that the case for you?

If not, do you have any other plugins installed?