Re: What about libnvidia-wfb.so ?
Depending where the libnvidia-wfb.so.x.y.z is installed (by third part repositories) it has to be symlink. It seems to work fine like this:
ln -s libnvidia-wfb.so.x.y.z usr/lib/xorg/modules/extension/nvidia/libwfb.so
libwfb.so do not seems to exist on Fedora Core 6, so there is no replacement tweak at this time.
Since this version drop support of NV30 and older we need to do another "legacy" version for aiglx with NV30 and older.
The usual legacy version is still usefull for DGA server and is used by some (fews) app like tv software (xdtv..., mayve xawtv?)