C-Note-06-003: Cisco IPS MC Malformed Configuration Download Vulnerability (11/01/2005)
An issue exists in one of the components of the Cisco Management Center for IPS Sensors (IPS MC) v2.1 during the generation of the Cisco IOS IPS (Intrusion Prevention System) configuration file that may result in some signatures belonging to certain classes being disabled during the configuration deployment process.

CIRC would like to thank Cisco for this information. It is recommended that you apply the available security update. Please visit Cisco's web site for further information:
http://www.cisco.com/en/US/products/products_security_advisory09186a008055dbdd.shtml