Anecdotal, but I’ve never once had a problem with any function of Firefox in the decade I’ve been using it. On the contrary it’s been the most stable browser I’ve had the pleasure of using, orders of magnitude more reliable in all situations than Chrome or Opera ever was.
This post smells of astroturfing. There’s been an awful lot of “why is Firefox so shit?” posts recently, now that Google is proving itself untrustable.
Your dreams are only a print shop away! Those guys will put damn near anything in a poster print, just bring 'em a file.