My default shell is /bin/tcsh and logins with ssh fail with the following messages: kdepath=/usr/bin: Command not found. kdepath: Undefined variable. These messages are errors in /etc/profile.d/kde.csh and because of them, the remaining files in /etc/profile.d/*.csh and (more importantly) the user's .cshrc and .tcshrc are not read leaving the user in a confusing state if they've customized those files.
Duplicate of bug 3686 and many others. Sorry.
*** This bug has been marked as a duplicate of 3686 ***