I seem to be having the dreaded lsass.exe error on our server that I just installed Nod on. This server is a Windows 2000 server. It is also our Exchange server and a file server. It is a secondary domain controller in our active directory domain. This server was extremely stable prior to the loading of Nod32 on it. Now it will periodically reboot (approx once a day). The only problem indicated in the event log prior to the reboot is a Dr Watson error stating: The application, lsass.exe, generated an application error The error occurred on 03/23/2005 @ 07:19:10.402 The exception generated was c0000005 at address 009EA512 (<nosymbols>). The following text is from the event log, since I haven't been present when the reboot occurred. I have DMON and IMON disabled on this server. I have excluded the Exchange folders from AMON scanning. Are there additional exclusions that might help in this case? Any help would be appreciated. I won't be able to keep Nod on the server for long if this keeps up. Thanks in advance.