I get a delay if DVD drive is set as #1 in boot order. Solution, set it after your primary OS disk. Then boot from DVD via the F8 bios boot selection window. If this isn't the issue then it probably wont help!

Also bios 0501 seems a little better over all. I managed to drop 0.06v vDIMM off and skewed my ram to -300/-250ps clock cha/chb. Dram controller ref -20mv instead of +10mv. vDIMM 2.28v -> 2.22v in bios for 5-5-5-15 1150mhz. I dont remember being able to do this on the 040x bios, maybe i Just selected the magic combination of settings and it passed tests who knows. It may or not be because of bios, probably pure luck!