I picked up my blackbook ultimate yesterday (2ghz, 1 gig ram, 80gig hdd) and immediatly installed bootcamp and Windows. General usage seems fine. One time opening the lid without shutting the machine down or putting it in hibernation the video became completely scrambled but a reboot fixed it and it hasn't happened again.
One thing I haven't been able to solve is itunes skipping. I am playing off the local drive without much else running, using about 300 megs of the 1 gig available. I have done the usual soundout fix to stop the skipping but it hasn't help anytime I scroll a webpage or open a new tab it still skips. It is making me worried about more serious work load in the future.