Hi Stephen,
Thanks for your two cents.... I'll make it a donation to the STI Project :) :) :) PURE DEAD BRILLIANT!!!!
Cheers.
P.S. I'll be testing with 32bit installs on Friday and expect that it'll prove my theory that the problems are due to missing or corrupt 64bit drivers for the nNvidia nForce 750i chipset..... probably ;) (currently in Chichester)