I have a Windows 2003 Small Business Server with dual 2.Ghz processors and 4GB RAM. it's the premium edition so it includes Exchange and SQL Server. Normal CPU usage is between 2-15% and available RAM is usually about 330MB. Today, our system has been running really slow. Files stored on the server accessed via a shared drive take much longer to open. Intranet applications that access MS Access databases are also sluggish. Several of my vendors and customers have also had email server outages today.
Is there a virus going around? Any suggestions how which tools I can use to best monitor server performance and troubleshoot why the system is so sluggish?