Here's a snippet from my loader-messages.log...what is it trying to tell me?

[DEBUG] [3/24/09 9:15:03 AM] [] [Loader.QueueRunner] [No Handler registered for action ID: 173152, Type: system.update.updatestats] [No Handler registered for action ID: 173152, Type: system.update.updatestats] [] []
[DEBUG] [3/24/09 9:30:03 AM] [] [Loader.QueueRunner] [No Handler registered for action ID: 173153, Type: system.update.updatestats] [No Handler registered for action ID: 173153, Type: system.update.updatestats] [] []
[DEBUG] [3/24/09 9:45:03 AM] [] [Loader.QueueRunner] [No Handler registered for action ID: 173154, Type: system.update.updatestats] [No Handler registered for action ID: 173154, Type: system.update.updatestats] [] []
[DEBUG] [3/24/09 10:00:03 AM] [] [Loader.QueueRunner] [No Handler registered for action ID: 173155, Type: system.update.updatestats] [No Handler registered for action ID: 173155, Type: system.update.updatestats] [] []
[DEBUG] [3/24/09 10:15:03 AM] [] [Loader.QueueRunner] [No Handler registered for action ID: 173156, Type: system.update.updatestats] [No Handler registered for action ID: 173156, Type: system.update.updatestats] [] []
[DEBUG] [3/24/09 10:21:43 AM] [] [Loader.Status Storer Module] [Processing Status_4ef25beae846344191473ea6111cc4ee_1237904543 681.xml] [Processing Status_4ef25beae846344191473ea6111cc4ee_1237904543 681.xml] [] []
[DEBUG] [3/24/09 10:30:03 AM] [] [Loader.QueueRunner] [No Handler registered for action ID: 173157, Type: system.update.updatestats] [No Handler registered for action ID: 173157, Type: system.update.updatestats] [] []