Couple reinstall of windows one low level format of HDD, etc. Loss of USB devices, which is all sympton of actual HTT going well over what bus can handle. The fact we were fooling around with over 1200 HTT was scarey idea to begin with....
For now until they fix the bios, stick to windows software and when you exit out, make sure you lower back the FSB to make sure as it writes back to bios! (and 5x times your FSB is what your HTT is going to be set for)
And don't ever trust that Asus stuff for HTT multi or actual HTT as it reads back from bios not from SMbus. Central Brain ID and ntune will report you back correct multi and HTT for you to base on.
I've ran up to 290FSB so far priming (of course cpu running @ x8 instead stock x11) to confirm that it runs fine. Past that, I can't even set the speed as there are no tools to allow me to do that -_-; BH-5 in this case worked as good as it did on Neo2 well upto 250 2-2-2-5 or 290 with 166 divider 2-2-2-5 (you calculate memory speed out but its lower than 250 i think :P)
Considering how stable it was @ 290FSB, it definitely do seem to have more room but only when the bios is patched or the clockgen comes out we shall find. For me, even 290FSB is sufficient as the CPU that will be used is idling FX-55 (waiting to make sure nothing I do on board will kill it such as vdimm cap mod which is running good so far). This poor 3500+ newcastle is going through a lot of fun time... I should really trade this one down with someone's cheaper CPU+$$$ so I can test things with less suspense