Why are these drivers being loaded?

[Jason Cortezzo]

This is more of a curiosity question than a problem...

I did a fresh FC3 install on an nforce system.  The eth0 driver was 
"forcedeth".  I downloaded the NVidia "nvnet" driver and installed it.
Everything is working fine, BUT when I do a 'lsmod', I still see the 
"forcedeth" module (even after reboot).  I can "rmmod" the module 
without any problems.  "forcedeth" isn't in my modprobe.conf or 
modprobe.conf.dist files.

How/Why is it being loaded still?

-Jason