Are you also seeing messages proceeded by debug?
When I've enabled debug, the only additional information I've seen is about 802.1x authentications:
2005-09-06 13:01:33 Local0.Debug 10.3.0.9 Sep 06 12:44:22 10.3.0.9 auth: Debug: 802.1x Authentication Failed: 00-12-f0-68-25-89
2005-09-06 13:02:14 Local0.Debug 10.3.0.1 Sep 06 13:05:48 10.3.0.1 auth: Debug: 802.1x Authentication Succeeded: 00-05-4e-43-f4-3a
2005-09-06 13:02:14 Local0.Debug 10.3.0.1 Sep 06 13:05:48 10.3.0.1 auth: Debug: 802.1x Authentication Succeeded: 00-05-4e-43-f6-ee
I don't think you'll see much more than this.