I know there was a discussion thread on this before, but I just noticed it. 2 users on my system, we both have iTunes open and running. iTunes v. 4.1, OS X 10.3.1.
Anyone else verify that 10.3.1 adds this ability or is it just because I edited the .plist and turned off it checking on mulitple users? (Which I did a while ago, couldn't get it to work, but now it is?)