Have just downloaded the x-plane 8.40 beta just to test it before I load 806 from dvd! I deleted 8.40 and loaded 8.06! My HD is missing about 4.5 GB! it was roughly 205GB before I messed around, now its 196GB... the dvd is about 4.5GB, so where has the rest gone??? I've spotlighted x-plane 840 but there's nothing there!!!