LoL! Not sure what the big deal is with the EFI bios anyway. How often do you actually go into a bios once your system is stable? I see so many people being hyper for the EFI- but my thought is... the only time I tinker with bios is when I first build a system; I can count on one hand the number of times I've gone into the bios on my old system over the past two years.
As of now, I don't have any problems with the F6b bios on the UD3P board. My system is running stable, overclocking to 4.8Ghz fine, and the 'auto' voltage is actually doing quiet well for such a substantial OC. I remember a few years ago I updated to a beta bios, and ran on that for three years. Whatever happened to the old saying, "ONLY update your bios IF you are having problems?"