Description of problem:

With

alliance.x86_64                          5.0-10.20070718snap.fc installed       
alliance.i386                            5.0-10.20070718snap.fc installed  

installed, I get the following message when I login (tcsh as login shell):

MANPATH: Undefined variable.

and my .tcshrc does not get executed when I login. The problem lies in
/etc/profile.d/alc_env.csh which assumes that MANPATH is preset. This script
attempts to add a directory to MANPATH but fails because MANPATH was not set.
One should add a test there to see if MANPATH is already set or not.
This is the line in question:

  setenv MANPATH "${MANPATH}:${ALLIANCE_TOP}/man"

Perhaps, instead:

if ($?MANPATH) then
  setenv MANPATH "${MANPATH}:${ALLIANCE_TOP}/man"
else
  setenv MANPATH "${ALLIANCE_TOP}/man"
endif