I also observed this with 10.10 AMD64 server version. With updates current as of January 10, 2011. In my case, I was using an Asus M2A-VM motherboard with AMD690G and SB600 chipset. This is a Radeon X1200 video equivalent.
I got around the problem by replacing the motherboard with one with a 785G north bridge. So the problem looks to probably be unique to the 690G in my original setup here.
I also observed this with 10.10 AMD64 server version. With updates current as of January 10, 2011. In my case, I was using an Asus M2A-VM motherboard with AMD690G and SB600 chipset. This is a Radeon X1200 video equivalent.
I got around the problem by replacing the motherboard with one with a 785G north bridge. So the problem looks to probably be unique to the 690G in my original setup here.