can't load a library...

[rich <rehartma@artsci.wustl.edu>]

Howdy all,

I'm trying to install a program that relies on libXt.so.6 and
libX11.so.6. Whenever I try to run it I get the message, 'can't load
libXt.so.6'

I've done dpkg -S for both of these and see that xlib6g provides both.
I've got this installed, so can anyone tell me what the problem could
be?

thanks in advance,

rich