Took me a while to get it working on my Windows partition, 'cause I had too many fonts installed.
That caused the menu to have a two-letter offset and some pages to not display anything. I fixed it by editing the Fonts.plist in the Local Settings/Application Data/Apple Computer/Safari folder, or something like that.
Overall, it's quite fast, and doesn't crash for me, but I can't live without my mouse gestures. I'm sticking with FF until I figure out how to add some add-ons.