From:
http://www.cisco.com/en/US/docs/ios/12_2sx/system/messages/sm2sx09.html
Error Message %SYSTEM_CONTROLLER-3-EXCESSIVE_RESET: System Controller is getting
reset so frequently
Explanation The MISTRAL ASIC is being reset frequently. The usual cause is an improperly seated module or another hardware condition.
Recommended Action Power down and reseat the module. If the problem persists, copy the message exactly as it appears on the console or in the system log. Research and attempt to resolve the issue using the tools and utilities provided at http://www.cisco.com/tac. With some messages, these tools and utilities will supply clarifying information. Search for resolved software issues using the Bug Toolkit at http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl. If you still require assistance, open a case with the Technical Assistance Center via the Internet at http://tools.cisco.com/ServiceRequestTool/create, or contact your Cisco technical support representative and provide the representative with the information that you have gathered. Attach the following information to your case in nonzipped, plain-text (.txt) format: the output of the show logging and show tech-support commands and your pertinent troubleshooting logs.
