This is an RC ROM and in my opinion not worth downloading/installing unless you want to be a guinea pig and want to help out by pointing out all the things that are wrong with it.
There's a few people that have posted at AD with the same problem about the SD card not mounting and now they're not even being able to load up their backup. I would suggest just flashing SBF and going back to the leaked Froyo release.
I'll just pass on it then. No need to reflash the sbf, 2.2 leak is still installed.