Actually the initial KV8Pro s were just copies of the KV8-MAX boards with the VIA non-pro chipset. The BIOS had no AGP lock, CnQ support was suspect, etc.
With version 1.1 of the board, everything is peachy. There's still some problem with AGP lock with certain graphics cards (but only some and seemingly a bit random) but the board is getting better and better with BIOS updates. There's a very recent BIOS released that pretty much solves all problems.
OTOH, there's as we all know, a technical problem with smoothrunning CnQ on s754 architecture - mainly due to last minute changes by AMD. The KV8 Pro board has only two RAM slots and will usually support CnQ without problems. There MAY be problems with CnQ (and this is clearly stated in the manual) if you use two double-sided RAM sticks - this is the problem from AMD.
The KV8 Pro isn't a great board. Buying today, I'd probably go with a higher-end board. But for the price it's a great value.
For the record. El Jefe. I wrote a PM to you on this subject BEFORE you posted this. I have in my sig a fully working setup based on this board and in that thread you can see that I use 2x512 RAM and DID successfully run CnQ. What's more you could've just looked into the manual to see on which conditions CnQ will run. After all this, this post goes into unnecessary product bashing