Research done by the Guardian on all of United's league matches at Old Trafford since the start of the 2006-07 season has turned up some startling stats.
According to them ...." on average, there has been over a minute extra added by referees when United do not have the lead after 90 minutes, compared to when they are in front. In 48 games when United were ahead, the average amount of stoppage time was 191.35 seconds. In 12 matches when United were drawing or losing there was an average of 257.17sec."
More on that research here..
The Marc Hughes - Ferguson history of mutual mistrust here..
Those statistics mean nothing. Each game has a differing amount of injuries, differing number of corners and all sorts of other events that take time off the clock.
what about added time where united are losing by more than two, doesn't make any sense for the ref to keep it going when the loss is obvious.
for those who didn't see the event, heres the highlights of Man Utd v Man City which caused the uproar from Hughes:
http://eplreplays.com/2009/09/20/man-utd-vs-man-city/
That article is useless unless they offer similar statistics for Liverpool (who scored more late goals than any team last season) and Chelsea who are similarly notorious for late goals.