ug... well, good luck...maybe someone will see something from that info you posted that I don't.
dont forget.. to make things fast as possible ...program on one drive, source files on another drive, scratch disk on another drive ( sized correctly ). indexing off on all drives.. all all esata , no fw800...the more it's spread out ( the load ) the faster it will work..you know all this..just blabbin...
good luck