32-bit nVidia driver on Kubuntu Jaunty 64-bit?

[Wulfy]

I noticed that there are files in /usr/lib32

wulfy at wulfy-desktop:~$ ls /usr/lib32
libcuda.so         libfakeroot     libGLcore.so.180.44  
libGL.so.180.44          libvdpau_nvidia.so         libvdpau.so.1       
libvdpau_trace.so.180.44
libcuda.so.1       libGLcore.so    libGL.so             
libnvidia-tls.so.1       libvdpau_nvidia.so.180.44  libvdpau.so.180.44  
nvidia
libcuda.so.180.44  libGLcore.so.1  libGL.so.1           
libnvidia-tls.so.180.44  libvdpau.so                libvdpau_trace.so   tls
wulfy at wulfy-desktop:~$

They seem to be related to the nVidia driver I have installed.  Any idea 
why I need all this when nVidia produce a 64-bit driver?

<http://www.nvidia.com/object/linux_display_amd64_180.51.html>

<sigh>  I thought I'd removed all 32-bit dependencies...  :@(

-- 
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Wulfmann

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