I am feeling lucky today ;) I was trying to profile one function that runs pretty long then got an error telling me that 589 ... ... ... is not a fixnum. After pressing enter on a [return to slime top level] a few times i got back to my lisp code. Then i tried to execute (profile:profile-all) (was compiling clis at that moment so PC was under a pretty heavy load) and got this (the report is attached). Ignas Mikalajunas