I'm having some troubles after installing the current ebuild of the nvidia drivers [and none of the ones on the site even work].
The driver loads ok and there doesn't appear to be an error in xorg's [6.8.0] logs. But the the problem is that the nvidia logo appears, but then doesn't disappear, and KDE's [3.3.2] windows appear to be drawn translucently on top of it.
I'm using a 5900MX built-in card, with 128mb ram.