I got a whole bunch of these error messages i the LogServerError

2008-04-24 09:05:17,890 [8] EPiServer.Log.Analyzer.PageSpanContainer.Save(:0) - Save PageSpanCollection definition failed EPiServer.BaseLibrary.ObjectStoreException: Failed to add relation from 93ebac1e-6044-45b9-8932-0931f4a67773 to f55fd625-2d8b-439d-86d7-de92d5131036 in object store default. ---> System.Data.SqlClient.SqlException: Item with name TimeSpanAnalyzerHistoricalData already exists on same level.    at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)    at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)    at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)    at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)    at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)    at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async)    at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)    at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe)    at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()    at EPiServer.Implementation.SqlObjectStore.AddRelation(Object fromId, Object toId)    --- End of inner exception stack trace ---    at EPiServer.Implementation.SqlObjectStore.AddRelation(Object fromId, Object toId)    at EPiServer.Implementation.DefaultSession.AddRelation(Object fromId, Object toId)    at EPiServer.Log.Analyzer.PageSpanContainer.Save()

Is there something wrong with the database or what causes this error?