aptd allows to perform package management tasks, e.g. installing or removing software, using a D-Bus interface. The privileges are handled by PolicyKit so the client application doesn't need to run as root. Furthermore aptd is started by D-Bus activation only when an user calls a method.
By default aptdaemon logs to the syslog facility AptDaemon. Furthermore you can use the -d option to get additional information on the command line.
You can report bugs at the Launchpad site of aptdaemon: https://bugs.launchpad.net/aptdaemon/+filebug
Sebastian Heinlein <devel at glatzor dot de>
aptdcon(1), org.debian.apt(7), org.debian.apt.transaction(7), PolicyKit.conf(7)