Assume there is a critical .NET web-based application that resides on three IIS servers, sits behind a load balancer, utilizes an Oracle database for its application data and stores its session state in a SQL Server database. You get a call that this application is suddenly performing very poorly for at least some users. Provide five distinctly different actions you could take to isolate where the performance problem resides, including the tools you would use for each (you can assume access to server, database & network administrators).