Comment 10 for bug 278062

So, investigating further, rosegarden depends on kdebase-bin because it invokes the kdialog binary through dcop for notification dialogs and such. This is a hackish workaround, and the dialogs should actually be coded/provided by rosegarden to prevent such dependencies on kdebase.

Until then, it would probably be wise to drop kdebase-bin to Recommends or Suggests since the functionality the kdialog brings is not vital and it wouldn't work in a KDE4 environment anyway.