First impressions Windows Vista RC2
 

One nice surprise in this build is that memory usage has been reduced significantly. Earlier builds used 55-65% of system memory just for the OS with no other software loaded. RC2 brought my memory usage down to 46% of the 1GB installed, hinting that even more of the code has now been compiled and in final form. I still think this is a little on the high side, but have hopes that the memory footprint will have been reduced even further once the final build is released.