>>  Am I getting it right that you'd want to add the backwards compatibility
> support to the DBUS code in KDE4? Wouldn't it be better to keep KDE4 nice
> and clean and make it DBUS-only? The ugliness of backwards compatibility
> could be kept separately in dcopserver.

It would also be nice and clean if KDE only talked DBUS when it absolutely had 
to, using DCOP as the native protocol. And that would actually guarantee 
backwards compatibility, w/o any substantial effort.