Heh? Seems kind of low..
I've seen info today about positive movement in a couple more races which they haven't included in their numbers yet - ND-AL (Nick Berg) and FL 20 (Allen West) both showing the the R candidate is ahead in the polls.
There aren't a lot of polls out there about House races yet. If these kinds of trends become more apparent, the R gain numbers will move up across the board. The magic number is 41.