if it's relevant a little system info:
asus v9560 video suite (fx5600, 128mb, dual dvi)
865pe (MSI neo2-ls) motherboard
p4 2.4c (800mhz fsb, ht)
2x512mb kingston pc3500 running at 800mhz
gentoo linux (1.4, w/ latest everything)
trying 2.6.0-test5, i'm going to go an see if the latest drivers work with my other 2.4 based kernel.