problem with hack using multiple inheritance for plugins

[massimo s.]

> At this point, it seems too much a deep object-oriented hell to be
> able to dig it myself. Would you help me getting some cue on the
> problem?

Update. Now I know that:
- every sane Python class should return <type 'instance'> after
type(self)
- when disabling the multiple-inheritance-hack, the situation comes
back to normal

What happens that makes the wxFrame class different from the cmd.Cmd
class?

m.