kdm freezes on logout from fluxbox

[El_Presidente_Pufferfish]

Sometimes(not always) when I exit fluxbox, kdm will freeze. It doesn't finish painting the screen, the login box is white, the background is black, and nothing works(no mouse, can't switch to console, can't ssh in) necessitating a hard reset.
It never freezes IN fluxbox, or IN kdm, just during the logout procedure.

Xorg.0.log, and Xorg.0.log.old show nothing out of the ordinary, but i'll post the end of Xorg.0.log:

[El_Presidente_Pufferfish]

yarg, I think it's related to this: http://ati.cchtml.com/show_bug.cgi?id=239

I'll try downgrading ati-drivers

edit - gah, using 8.18.8-r1, i can't seem to get dri support working(kernel 2.6.14.4, xorg-x11-7.0.0)