> wget http://downloads.xvid.org/downloads/xvidcore-1.2.1.tar.gz
> gunzip xvidcore-1.2.1.tar.gz
-> tar xvf xvidcore-1.2.1.tar.gz
+> tar xvf xvidcore-1.2.1.tar
> cd xvidcore/build/generic
> ./configure --prefix=/usr
> make
-> sudo make instal
+> sudo make install
> cd /usr/lib
-> rm libxvidcore.so.4
-> ln -s libxvidcore.so.4.2 libxvidcore.so.4
+> sudo rm libxvidcore.so.4
+> sudo ln -s libxvidcore.so.4.2 libxvidcore.so.4
After you do these steps, when rip_dvd is running using any xvid profile,
you will note with 'top' that the mencoder process is using > 100% of your CPU.