Clear pagefile on shutdown.

By default, Windows XP Professional does not clear the virtual memory pagefile when the system is shut down. In some organizations this is considered a breach of security because the data in the pagefile might be accessible to users who are not authorized to view that information. To enable this feature and clear the pagefile each time the system is shut down, start the Group Policy snap-in, expand Local Policies, and then select Security Options. Right-click Shutdown: Clear Virtual Memory Pagefile and then click Properties. By default, it is disabled. To force Windows XP Professional to clear the pagefile when the system is shut down, select Enabled.