Could someone please give me the definitive answer whether or not FF update is going to disable my Norton? I have looked at some of the info but I see conflicting reports and am not computer literate enough to understand the reasons.

I have Norton 360, FF update said it said it would disable 2.0 (I think) and I think what I don't understand is if 360 is 2.0 updated or a completely different version. It disables the Norton tool bar?

I've read reports new FF not working very well, but they have fixed it? ok...is the FF update pop-up I've had hanging around for a long time going to give me the initial update or the new and improved version? Also Norton wants me to upGRADE, does that have anything to do with this? I read that they were also doing something about the compatibility but that sounds like they want to sell me something.
Thanks, Zygo