[mcclim-devel] keyboard modifier:alt-gr (not working?)

Hallo, entering characters with the help of alt-gr modifier does not work on my machine (debian squeeze) in mcclim applications, e.g. climacs and beirc. Using describe-key in climacs and hitting alt-gr yields: unbound gesture: iso-level3-shift Is this the expected behaviour? My system: mcclim-20101006-cvs sbcl-1.0.45 Fulvio Ciriaco