Installing CUDA 5.0 RC samples

I tried to install the full CUDA 5.0 package but I got the following error:

Driver:   Not Selected
Toolkit:  Not Selected
Samples:  Installation Failed. Missing required libraries.

So, in the /tmp/cuda_install_2340.log I've got:

Missing required library libglut.so

But I have installed it before, because I do:

facundo@gpgpu:~$ locate libglut
/usr/lib/x86_64-linux-gnu/libglut.a
/usr/lib/x86_64-linux-gnu/libglut.so
/usr/lib/x86_64-linux-gnu/libglut.so.3
/usr/lib/x86_64-linux-gnu/libglut.so.3.9.0

So, What is the problem? I am on Ubuntu 12.04