I'm an ArchLinux user and build kpowersave via AUR.
kpowersave says that there is no dbus running, although it is. It is listed in ps output; I also restarted it...
So if I right-click the powersave icon there are not really much entries ;-)
Any hint? Is dbus too new?
Is powersave running? Sometimes the meassage about not running D-Bus could also mean powersave or HAL is not running. We fixed IIRC this already at the repository.