So with the new version (and -H 2 setting) my hash rates on x86 indeed went from about 195Khash/s to 207KHash/s, which is almost exactly what I was getting on the x64 12-07 version. My x64 hashrates went down from 207Khash/s to about 202Khash/s

HOWEVER, one extremely noticeable problem is that with either x86 or x64 builds, the new -H 2 setting causes me to lose hashrates once every 15 blocks or so. I'll see a steady stream of 205-210Khash/s followed by a single block being mined at 150-165Khash/s, and then the next block everything will return to normal.

I think, for the moment, I'll stick with the x64 12-07 build.