If I try to OC the FSB from 266 to 267, the boot crashes and doesn't get past POST. If I adjust the FS down to 260, it still crashes. The FSB has to be set at 266 to POST. Any ideas why? I have not touched any other settings on the above Mobo.
I thought that you have locked multplier version of Q6600. But reading your second post, that you WERE able to go 3.2 Ghz, I have no clue.
Perhaps it has something with your harddisk. Perhaps disabling S.M.A.R.T HDD can help.