Its worth pointing out while its been released there are reviews which speak of bugs still to be fixed within 2/3 weeks...I've been using the RC version with no issues till today when that youtube issue with the white screen of death appeared which is a flash issue...
Firefox 4 now available
By Paula Rooney | March 22, 2011, 7:09am PDT
"The team plans to ship out a quick fix patch code named “Anteater” within the next two weeks if necessary. Then, a “Macaw” update is expected two to three weeks from today that will incorporate other fixes discovered during the first month of use."
source
http://www.zdnet.com/blog/open-sourc...available/8542
Just the fact that 3 out of 10 add-0ns as yet have not been tested for compatibility
says to me they've issued it half baked
A couple of weeks after the RC version was released
Doesnt make a whole lot of sense to me if the idea of alpha/beta/RC testing is to end up with a fully working version thats ready to go