I turned the FSB up. Maybe you need to check your FSB voltage?
Why is your RAM running so fast? Thats DDR2-1066! Set the divider to 2, and you should be able to do 400x8 just fine.
And EBAY! as in ... that's where this motherboard is going due to lack of features and lack of IDE controllers, and lack of SLi, and lack of Linux.