> Correct me if I'm wrong, but doesn't Firefox already alert you on startup of newly installed Plugins? Eh sorry I don't know the answer, been a Safari/Chrome

> Correct me if I'm wrong, but doesn't Firefox already alert you on startup of newly installed Plugins? Eh sorry I don't know the answer, been a Safari/Chrome user for a while. From an end user POV, I think it would be okay to have both the OS permissions grab and a warning from Firefox that new plugins have been installed. You've already granted the original app (iTunes) permission to install whatever, but it wouldn't be much more of a hassle to have Firefox popup a confirmation box that new stuff has been installed (assuming it doesn't, or at least it didn't on the OP's system).