Confirmed. Emacs (emacs Version: 23.2+1-7) function ispell-region gives:
/========[ Buffer: *Messages* ] Spell-checking *scratch* using aspell with default dictionary...done Starting new Ispell process [default] ... ispell-init-process: Error: The filter "nroff" does not exist. \======== Downgrading aspell and libaspell15 to version 0.60.6-4 removes the problem. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]

