Games don't give eror messages saying that they can't use dri, but they run in a slow jerky manner like they're using indirect rendering. This seems to affect all opengl games. Since the only other thing I changed in the kernel configuration was to enable usb joystick support, and it turns out I don't have a usb joystick I'm guessing this is a problem with a patch applied to the dri video card drivers (doing a diff between these kernel sources and 2.4.19-r7 which I was using shows changes, so I assume there was a patch applied)
from what kernel did you upgrade, and please use a web browser that wordwraps for the sake of my sanity...
I was using gentoo-sources-2.4.19-r7. I've switched back to using it now, with the exact same options as I was using with 2.4.19-r10 and the problem went away, so I'm pretty sure it's a bug in this package. Sorry about the word wrapping - I was using konqueror and didn't think about it.
koo koo, yeah -r10 will probably never be moved to gentoo-stable because of several issues, did you ever try -r9?
give lolo-sources a shot, and forget that -r10 exists