Yoh Alien Grey,
these are about the same settings I am using for 24/7. They are LinX stable (20 runs). I´m running it with 9*450 MHz though.
I thinks it has definitly something to do if you use a quad or a C2D.
I suppose this board isn´t realy made for quads. If you use quads you have to fire up your nb voltage over 1,5v to get a stable system.
I hope your trying won´t fail