Steam blows up syslog fast

[Videonauth]

When running steam /var/log/syslog gets flooded with error messages. Growing it insanely fast to gigantic sizes > 100 MB in a matter of hours.

The lines in question:

Oct 22 19:07:56 NEXUS-ONE steam.desktop[9806]: This is normally a bug in some application using the D-Bus library.
Oct 22 19:07:56 NEXUS-ONE steam.desktop[9806]: process 9990: arguments to dbus_connection_unref() were incorrect, assertion "connection->generation == _dbus_current_generation" failed in file ../../../dbus/dbus-connection.c line 2824.
Oct 22 19:07:56 NEXUS-ONE steam.desktop[9806]: This is normally a bug in some application using the D-Bus library.

This happens very fast, just did a measuerment on it and it was about 213K per 2 minutes wich syslog grew.

Shutting down Steam stops it completely. Bu thats not a real option since we like to play our games, don't we? :)