Many boards did that. The only good news is the gain from 4x to 8x isn't enough or worth enough to change the motherboard to one that can support 8x.
I am currently running windows xp. I have an ATI 9550 graphics card. My mother board is a m7ncd. It has a built in AGP I believe but as far as I can tell it is disabled. I have a gig of ram and 1.4 ghz processor. My main problem is every time I try to turn my AGP on to 8x, the next time I boot, the system turn it back to off. I have updated to the latest drivers and I know there was a time when I had this turned on so I am not too sure what I did with this install. I have disable a couple of services under services.msc. Is there anything in there that may have something to do with an AGP. Any help with be appreciated.