The Museum loads OK on my big computer, so long as I start things with that Game Booster thingie. After I run the computer with that, I usually have to re-boot the system in order to get certain things to work properly afterwards... If I don't use the booster, the Museum crashes on load. As it is now, it takes even longer than before to load. I have not tried the Museum on the little dual-core machine upstairs yet. I also have not tried a new campaign or even a Quick Mission yet, but will tonight... More later.
Good luck with the GFO, and also with the new hard drive there Rockin Robbins...