Just picked this up from the Gnome-Devel mailing list:

+ ndesk-dbus, ndesk-dbus-glib (external dependency)
- good from a security point of view
- need to be in a mono-specific section of the external dependencies
(because of the special rules about depending on mono)
=> accept

Hmm, I wonder what "special rules" those would be?

Given Mono's encumbrance on Microsoft's poisonous "Intellectual Monopoly"®, that statement is both intriguing and terrifying.