No. Five games do not a season make, nor does one season make a manager. Underperformance by teams around us - please look at the names - and some real luck (God knows the rub of the green has gone against us often enough, so no complaints there) have had a real bearing on our current league position.
Success breeds confidence, and confidence leads to success <insert clich? here>, so no, the jury's still out on Brew's ability. We've played a system based on the absence of an injured striker together with a couple of inspired substitutions (for that, read 'disastrous' if we'd lost) and it's worked, just; the side are getting back to the fitness levels which made them better players under Brew's last tenure; and one or two players who weren't really at the races before are showing some good form now. Nick Leeson had a good run of form, too, mind.
Ask again at the end of the season, or two seasons after that. It's much too soon to say.
Still not sure that Ferguson guy's right for Man Utd...