I noticed one more missing bit: mesa now uses r300g by default. The package does not do install so it should pick it explicitly. Thanks Michal
--- debian/libgl1-mesa-dri.install~ 2010-10-25 13:47:51.000000000 +0200 +++ debian/libgl1-mesa-dri.install 2010-10-27 10:28:39.000000000 +0200 @@ -1 +1,2 @@ build/dri/lib/*_dri.so usr/lib/dri/ +build/dri/lib/gallium/r300_dri.so usr/lib/dri/