Hi All, After installing the service pack 2 for exchange 2000 my application logs are being filled with the following 2 errors, both of them in the application logs...... enent id 1010 and source perflib, and the other one is event id 901 source davexpc. It says these things every 1 second on the logs The Collect Procedure for the "EXOLEDB" service in DLL "D:\Program Files\Exchsrvr\bin\exodbpc.dll" generated an exception or returned an invalid status. Performance data returned by counter DLL will be not be returned in Perf Data Block. Exception or status code returned is data DWORD 0. The description for Event ID ( 901 ) in Source ( DAVEXPC ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. The following information is part of the event: DAVEX. Please inform if any of you have faced the same and how you resolved it.. this exchange server is installed from the backoffice server 2000 cd's and also note that I had added a couple of other servers from the domain on to the healthmonitoring of the backoffice server... but today even after I stoeed the health monitoring to monitor for these other servers.. I am still logging these messages..