I bet Eriksson is regretting choosing Walcott now instead of Defoe.
Anyways, Although Eriksson prefers the 4-4-2, I think it makes a lot more sense instead of gambling on the health of a couple of strikers (one who hasn't even recovered from a broken foot yet), to move to a 4-5-1 formation. Our midfield is one of the strongest in the tournament anyway, so that won't hurt. It will avoid putting too much stress on the strikers. They only have 5 days between games and that includes practicing...
By-the-by, awful lot of England chat in an anthing-but-England thread isn't it?