Re: FreeBSD 7.0 Current with Xorg 7rc3 Modular and nvidia driver.
You say that you've set X11BASE to /usr/local yet your logfile shows the server loading modules from /usr/X11R6/lib/xorg/modules... In fact, nothing is loaded from your /usr/local hierarchy. It seems to me that your xorg is not built the way you think it is :-)
Perhaps deinstalling those ports and reinstalling them (without setting X11BASE), and then reinstalling the nvidia driver, might be your best bet.
FWIW, I'm running the exact same setup (7.2.0 RC3 on -CURRENT), but I'm using 9746 instead of 9631. You could also try upgrading the driver.