In a few words, don’t do it. Many things are now broken on my nice Mac Pro box. USB Flash drive doesn’t work. VMware Fusion is broken (yes, I even tried updating to the 4.1 beta, which doesn’t seem to install correctly). SoftRaid is giving me a warning about needing 10.4.8 or better. It’s not pretty. I was up until midnight last night trying to resolve some of these issues with no luck. How disappointing.