Since ages i'm searching for fixing my compiz-fusion problems.
It was just working with xgl and not with xorg and nv-native...
(major problems: no nv-settings and just a sgi-gl-server @ bad 2D-speed)
Often i found the hint with the option '--no-libgl-fallback', but
never where i should set it.
Now i found the info here: http://otmanix.de/2008/02/27/compiz-...-opensuse-103/
Compiz, GL and NV-Settings are working perfect now...
... perhaps i'm not allone with this prob.