As per Microsoft: "The Monitoring thread will recover from these errors if they are isolated. If you receive more than six of these events every hour, then the underlying cause needs to be investigated". See MSEX2K3DB for additional information about this event.
Build a great reporting interface using Splunk, one of the leaders in the Security Information and Event Management (SIEM) field, linking the collected Windows events to www.eventid.net.
Obtain enhanced visibility into Cisco ASA firewall logs using the free Firegen for Cisco ASA Splunk App. Take advantage of dashboards built to optimize the threat analysis process.