On CCL, there is an error in running the combination test. I happened to notice this today, but someone posted to cll about it too:
http://paste.lisp.org/display/93531
http://groups.google.com/group/comp.lang.lisp/msg/a812d158fcfcce70
This is mostly a reminder to myself, but if anyone happens to be a CCL user and want to try to debug this, by all means, have at it.
Liam