My Umbraco person says this problem occurs because of the server and my hosting party says it occurs because of Umbraco software. Can somebody please give me some clarity where the problem really lays.

Umbraco: 4

Widows version: Windows Vista

Asp net version: 4.0.30319.1

Stack trace:

[SqlException (0x80131904): Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. A severe error occurred on the current command. The results, if any, should be discarded. A transport-level error has occurred when receiving results from the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.)] System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) +2062078 System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +5050204 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning() +234 System.Data.SqlClient.TdsParserStateObject.ReadSniError(TdsParserStateObject stateObj, UInt32 error) +555 System.Data.SqlClient.TdsParserStateObject.ReadSni(DbAsyncResult asyncResult, TdsParserStateObject stateObj) +390 System.Data.SqlClient.TdsParserStateObject.ReadNetworkPacket() +35 System.Data.SqlClient.TdsParserStateObject.ReadBuffer() +30 System.Data.SqlClient.TdsParserStateObject.ReadByte() +69 System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +102 System.Data.SqlClient.SqlDataReader.ConsumeMetaData() +33 System.Data.SqlClient.SqlDataReader.get_MetaData() +86 System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +311 System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) +987 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) +162 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +32 System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +141 System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) +70 Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters) +152 umbraco.DataLayer.SqlHelpers.SqlServer.SqlServerHelper.ExecuteReader(String commandText, SqlParameter[] parameters) +37 umbraco.DataLayer.SqlHelper`1.ExecuteReader(String commandText, IParameter[] parameters) +87 [SqlHelperException: Umbraco Exception (DataLayer): SQL helper exception in ExecuteReader] umbraco.DataLayer.SqlHelper`1.ExecuteReader(String commandText, IParameter[] parameters) +142 umbraco.BusinessLogic.ApplicationTree.Cache() +199 umbraco.BusinessLogic.ApplicationTree..cctor() +40 [TypeInitializationException: The type initializer for 'umbraco.BusinessLogic.ApplicationTree' threw an exception.] umbraco.BusinessLogic.ApplicationTree.getAll() +0 umbraco.cms.presentation.Trees.TreeDefinitionCollection.RegisterTrees() +74 umbraco.cms.presentation.Trees.TreeDefinitionCollection..ctor() +18 umbraco.cms.presentation.Trees.TreeDefinitionCollection..cctor() +21 [TypeInitializationException: The type initializer for 'umbraco.cms.presentation.Trees.TreeDefinitionCollection' threw an exception.] umbraco.cms.presentation.Trees.TreeDefinitionCollection.get_Instance() +14 umbraco.controls.Tree.TreeControl.Initialize() +183 umbraco.controls.Tree.TreeControl.OnPreRender(EventArgs e) +47 System.Web.UI.Control.PreRenderRecursiveInternal() +103 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2496 Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1