there is a new K8V SE Deluxe Bios (1007)
ftp://ftp.asuscom.de/pub/ASUSCOM/BIO...K8V_SE_Deluxe/

I've three memory module on my motherboard (one 1GB, two 512 MB), each
PC3200.

With two memory module, I've memory at full speed 200 MHZ
With three memory module and Bios 1006, I've memory at full speed 166 MHZ

With three memory module and Bios 1007 (and I believe old 1005 bios), I've
memory at full speed 133 MHZ

so I return to Bios 1006, which give me a faster system and is stable for
me.