I just read an article in June 2007 Shutterbug magazine (pg. 62-66) stating that Vista was unsuitable for professional photograph editing. I find this an interesting assesment, don't you? The reason Vista isn't usable is that when it (regularly!) pops up a security dialog box to authorize an action (every action, it seems), it dims the screen and DEACTIVATES MONITOR CALIBRATION! Why it does this is anyone's guess, some programmer did it and didn't tell anyone probably. In any case, the article's summation of the issue is "The effect of this is that it will interfere with editing or printing by making normal screen matching predictably impossible. .... As it stands, with this "bug", Vista as an operating system can't be recommended." Wow - makes Macs look pretty good, yes?