Running XP Home as many do and have no problems. It just wants me to update from 3.0.13 to 3.5.2 which I won't do for another few months until they have the bugs worked out of 3.5.
I suppose I could log in as a non-administrator and see what happens, but don't have the time to mess with it.
It never prompted me to update to 3.5.2 but kept patching the older version or addons. But I'd get an error on my local paper site for certain pages, said I needed to dl 3.5.2.
So I did that, and can read the pages again, mainly weather report.
They finally got the xtra tab like IE8 which I like but I figure some of my addons may not work with the latest version, will just struggle along with it. Also they changed history, and I was using show all, nothing there. It took me a bit to figure out you have to double click in today, yesterday, etc., for all to show.
Probably other changes I haven't noticed yet.