It looks more of an anti-virus issue. The Microsoft support says this
"This problem occurs because the antivirus software detects Code Red worm requests, including .ida file requests, to the World Wide Web Publishing Service. The antivirus software acts as if the server has been infected with the worm, causing the IIS Admin service to crash or close unexpectedly.
This problem can occur with McAfee antivirus software that is running a signature before 4266."
http://support.microsoft.com/kb/821749
I have turned the Mcafee firewall off and IIS continued to work without stopping. for a better solution, you have to get the antivirus software that runs a signature above 4266