I am a new user so the answer to this question might seem obvious.

The other night after I disconnected my iPod from iTunes I noticed another person's name under "Shared" on iTunes. This name is still on imy Tunes-so I am wondering how this person's name got onto my iTunes and is there any way to delete it?

I currently use an unprotected wireless network so I don't know if that has anything to do with it.