Knowing that latest bios has problems with quads makes me happy ! Only way I could downgrade would be by using floppy, but since I haven't one I cannot do anything. Mezzro, please, could you give me some advice?

The last semi-stable setup was this:

-450 FSB with multiplier at 9
-Skew Auto
-Strap @ 266
-RAM Freq @ 1800 with 1.98 vdram
-Read and Write control disabled
-Clock twister moderate
-Transaction booster moderate
-Performance Lev 6
-V.Core 1.32
-LLC disabled
-PPL 1.54
-FSB termination voltage 1.32
-NB voltage 1.4
-SB 1.5 and 1.06
-Everything else is on [Auto]

The CPU is cooled by the Thermalright Ultra 120 Extreme, RAM are 4x 1 GB of TWIN3X2048-1800C7DFIN DDR3. How can I get it stable to 4Ghz daily? Is it actually possible? Any other suggestion?!

Thanks .