I think there is a psychological element which hasn't been addressed. Each of the teams that were 'hot' favourites and didn't win this weekend have all suffered defeats before, within the last 7 days.

Man U - against Portsmouth last weekend
Arsenal - haven't won since losing to Man U
Newcastle - lost to Bolton
AC Milan - lost to Barca
Lazio - lost to Middlesbrough

In future I think we should wait for the teams to bounce back, then start betting on them. Morale plays a huge role in a team's results, if a team is coming off a loss then it's likely they need a small period to bounce back. Such as I think Arsenal is.

As for Man U, betting on them is stupid. They always fail to get the results and it's not worth risking it any more. 1.35 for a win? That's stupid, they didn't even score.

It might be something to consider.