I've never had any probs with FF and i've been using it from day one on all sorts of machines and installations.
Also have it running on a Win 8 Pro PC and also testing the beta Win 8 version and no problems
Firefox 17 is now up and running on my Desktop. Will later on download FF Beta 18 to my Laptop for test purposes.
I doubt that anyone will really notice any difference from FF16 because all popular Add-ons should continue functioning and make FF a worthwhile Browser for those of us who appreciate such.
Thanks wiltsman, bibblebub & bazwillrun for your postings.