Server 2008 listening on port 80

q: we have a server that is listening on port 80 but neither IIS nor World Wide Web is installed.

• netstat -ano | find ":80"
• Returns that PID 4 (SYSTEM) is listening on port 80

a: SQL Server is installed on the box and with it came "SQL Server Reporting Services (MSSQLSERVER).  When we stopped that service the server was no longer listening on port 80.