I have made an error on the obarun repo concerning this package (pushed it the testing version grr). So if you have updated the system, you should be have the 1.10.12 version installed on your system. This is the testing version.
I have downgraded the version at the obarun repo to 1.10.10-3.
So to come back to the old version, just install it again by :
$ sudo pacman -Sy dbus dbus-docs
The good version is 1.10.10-3.
Apologize for this mistake.