Okay
Just some words of advice, I tried the 10 beta version about (a month?) ago, and everything installed fine [no errors], however, when I reboot into X, my screen turned white!!
What sucked about that is that X thought everything was fine (I couldn't find anything wrong in the logs) and it seemed that I was able to use my mouse, and if I moved to the KDE menu, I was able to open programs... however, everything was still in white.. it was so bad, that even switching to a console didn't work (it was white also)...
I hope that it was just a bug, however, I had no way to report it...! (I didn't have html at the command line running. I was on a laptop, and didn't have a chance to set up my encryption protocols to allow it to talk to my AP... Anyway, good luck with your upgrade!