Using Windows Small Business Server 2003, I have an Exchange 2003 server. We have a calendar in public folders, where a user puts events. She uses a distribution list local to her machine to "invite" people to those events. When she modifies the events, in the event log of the server is a 1025 error message (servername stripped for security reasons): Event Type: Warning Event Source: MSExchangeIS Public Store Event Category: General Event ID: 1025 Date: Time: User: N/A Computer: SERVER Description: An error occurred on database "First Storage Group\Public Folder Store (SERVER)". Function name or description of problem: FEqEntryId Error: 0x80040107 I've run dbinteg and restarted the machine.. no help. Blew away her profile, recreated, no help. Microsoft's KB is just a little less help than the error message itself. Any suggestions or people who recognize this error out there?