No spoilers, but this does come from a spy that has been reliable in the past, from Agent Pooh Bear. He says no
focus problems, but that Jake Lloyd is 'really bad.' Please don't be true!!!!! Anyway, here's what he said, and as with all
things Prequels... Wink nudge nudge uh huh yeah Right...

Harry, I was out with some friends tonight who happen to be part of
Lucas's
Empire. We were discussing the supposed problem with the prequels. They
laughed. They have seen the movie. It looked fine to them. The acting
of
the Anakin Skywalker kid was really bad, but no focus problem. What
Lucas
is probably doing is some reshoots. Apparently, he has worked out new
shots by cutting and pasting different video on top of each other to
create
kinda a video storyboards.

Also, don't forget, ILM is VERY, VERY hard at work on final shots (
described to me as "seamless...perfect" Those require film plates ( it
has
to do with some rather technical issues involving grain matching, film
rack, etc, that requires the actual film, not video )

Agent Pooh Bear