Each Saturday, we schedule a full backup on a W2K server which includes an E: drive with 56GB used. The backup appears to complete for the server including the E: drive but we see "Insufficient system resource" messages in our Legato log for some files and the server is hung with the "nsrexecd referenced invalid memory" message. "Insufficient system resource" message appears when users attempt to access file shares. Also see numerous "server call to system service-2000" and "page pool empty-2020" error messages in system event log. Legato version is 6.1.0.0. Thanks for any help.