Hope this isn't a known problem but clearcase and tq in the 2005-03-07
sumo tarballs don't work very well together. In fact, it doesn't work
at all.
A little googling says
http://list-archive.xemacs.org/xemacs-beta/200501/msg00238.html
has a possible solution, reverting back to rev 1.1 of tq.el.
I'm using that now so I can use clearcase.
Ray