I manage an SBS 2003 SP2 server, and a couple weeks ago it stopped displaying the Performance reports under Monitoring and Reporting in the server management console.
It gives the classic: The Page Cannot Be Displayed error.
I have rerun the Monitoring and Reports setup. Restarted the appropriate SQL services, tried everything in all the forums I could find, still now luck. Some users have had this problem with the Backup and Companyweb pages, but my issue is only with the Monitoring and Reporting page.