auth.log recurring entry

[Keith Clark]

I seem to keep getting the following recurring entry in my auth.log file
very frequently and was wondering what the source of it is.

dbus-daemon: Rejected send message, 1 matched rules; type="method_call",
sender=":1.66" (uid=1000 pid=6051
comm="/usr/lib/indicator-applet/indicator-applet --oaf-a")
interface="org.freedesktop.DBus.Properties" member="Get" error
name="(unset)" requested_reply=0 destination=":1.914" (uid=0 pid=30944
comm="/USR/SBIN/CRON "))

Thanks,

Keith