Problem with sawfish-ui + keybindings

[Stefano Sabatini <stefano sabatini-lala poste it>]

Hi all,

after a lenny -> squeeze (debian testing) update, I'm facing problems
with the sawfish keybindings, that is they're not anymore recognized.

This seems has to do with a problem I have when I try to launch
sawfish-ui:

stefano geppetto ~> sawfish-ui
*** Unbound variable: gtk-preview-new
(You're accessing an undefined variable or function `gtk-preview-new')

Has someone some hint?

Regards.