I myself built two systems around the ASUS M2NPV-VM. I bought two dual core XP3800+'s and two 2 gig Patriot Mem Kits (DDR2-667).
One board did fine with the processor and memory, however the second board hated both sets of memory. I ended up swapping the memory back at Fry's, and still no luck. I then ordered a pair of the Patriot from Newegg, and still had problems (keep in mind that the memory from Newegg tested bad in both boards). I then ordered a pair of Mushkin in hopes of getting it to work, and of course it didn't. I returned the board back to Fry's and swapped it for another Asus M2NPV-VM. I tested it there, and BIOS didn't lockup, so I assumed I was safe to leave.
I got home with the new Asus board just to get millions of BSOD's with the Mushkin memory, and it wouldn't boot in dual-channel mode with the Mushkin. Finally, I took the board back to Frys again and swapped it for the MSI K9N SLI Platinum board. I had problems with the Mushkin memory in it at first, but setting the ram voltage to 1.9, and updating to the newest bios, and the thing was rock solid. I've burned it in with Memtest and all that, and so far no issues.
Yeah, so I guess this is just the long way of telling you to avoid that Asus like the plague, as it has severe issues with mem compatability, and the newest bios release only made it worse.