Let's count the keeper mistakes today, and see how many are reported about heavily.
Cech: Didn't dive for the first goal (makes it 1-0), pushed Goufrans shot to Sissoko for the second goal and didn't dive for the rebound (makes it 2-2).
Howard: Hesitated whether to come out for the 3rd goal (makes it 3-1).
Federici: Poor save just before the Larsson penalty shout (possible pen)
Mingolet: Followed the ball from the corner, never attempting to get it and got caught out behind his own players (makes it 2-1)
Of note, both keepers also made awesome saves to keep it 1-1 at the time of the saves. Special mention to Bramble for being his usual inept self.
Al Habsi: Demostrates what would have happened if De Gea did what most people said he should have done, only this led to a goal, De Gea would have conceeded a penalty.