I don't think the double boot thing is an issue at all. Weird at first but if you never power down then how would you even notice it? If you reboot it won't do it.
Edit- Got my 6400 up to 2.8GHz already. Still not even getting hot. Wow, I didn't realize how good these Core 2 Duos were at overclocking. Amazing!
Edit- Got my 6400 up to 2.8GHz already. Still not even getting hot. Wow, I didn't realize how good these Core 2 Duos were at overclocking. Amazing!