[K12OSN] thunderbird can't find libXp.so.6

[petre at maltzen.net]

I'm trying to run Thunderbird on k12ltsp ver. 4.2.1, but when I do I get
this error:

error while loading shared libraries: libXp.so.6: cannot open shared
object file: No such file or directory

Locate shows libXp.so.6 to be /opt/ltsp/i386/usr/X11R6/lib/libXp.so.6
which is a symlink to /opt/ltsp/i386/usr/X11R6/lib/libXp.so.6.2.  I put a
symlink to it in /usr/lib/ but that didn't help.  Does anyone have
thunderbird running on this version of k12ltsp?

Petre