The upgraded 1.1.1 kdesupport from ftp.updates.com for
rh6.0  has a buggy file /etc/profile.d/kde.csh

It causes users with the CSH shell and sourcing the system
defaults to stop.

It is caused by this file using bash syntax, not csh syntax.

Here is a fixed version:

# KDE initialization script (csh)
#echo "CSH kde init script"
if ( $?KDEDIR ) then
         if ( $KDEDIR == "/usr" ) then
         exit
         endif
endif
setenv KDEDIR /usr
setenv kdepath "${KDEDIR}/bin"
echo $PATH | grep -q $kdepath
if ( $status ) then
  exit
endif

setenv PATH "${kdepath}:${PATH}"