The same problem for me with nouveau module.
I've got "blacklist nouveau" line in /etc/modprobe.d/blacklist.conf, but each time after reboot I've got "nouveau" module in "lsmod" output, and according to "dmesg" logs it's really loaded, so correctly using nvidia drivers is not impossible.
Versions: Ubuntu 10.04.3, Linux kernel 2.6.32-33-generic.
The same problem for me with nouveau module. d/blacklist. conf, but each time after reboot I've got "nouveau" module in "lsmod" output, and according to "dmesg" logs it's really loaded, so correctly using nvidia drivers is not impossible.
I've got "blacklist nouveau" line in /etc/modprobe.
Versions: Ubuntu 10.04.3, Linux kernel 2.6.32-33-generic.