Keep getting Timeout expired errors.

We keep getting timeout expired error messages when trying to commit changes or refresh. Sometimes I have to attempt to commit changes 8 or more times before I don't get a timeout error. I am not the only person getting this error.

What is timing out? I've run a trace on the SQL server and I can't see any command taking more than 5 seconds to run.

Here is the full message:

System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
at System.Data.SqlClient.TdsParserStateObject.ReadSniError(TdsParserStateObject stateObj, UInt32 error)
at System.Data.SqlClient.TdsParserStateObject.ReadSni(DbAsyncResult asyncResult, TdsParserStateObject stateObj)
at System.Data.SqlClient.TdsParserStateObject.ReadNetworkPacket()
at System.Data.SqlClient.TdsParserStateObject.ReadBuffer()
at System.Data.SqlClient.TdsParserStateObject.ReadByte()
at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
at System.Data.SqlClient.SqlDataReader.ConsumeMetaData()
at System.Data.SqlClient.SqlDataReader.get_MetaData()
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.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
at System.Data.SqlClient.SqlCommand.ExecuteReader()
at #vlhb.#wEc.#Emb(ICollection`1 , DateTime )
at #vlhb.#wEc.#CFV(String )
at #GWeb.#WXM.#xFV()
at #GWeb.#WXM.#aQU(ICollection`1 , DatabaseObjectIdDictionary`1 , SourceControlOperation )
at #GWeb.#XXM.#L8c(SourceControlOperation )
at #GWeb.#XXM.#zYM(ToCommitChangeSet& toCommitChangeSet)
at #GWeb.#VXM.#mYM[#eTb](Func`2 , ICancellableOperationStatus , IReadOnlySourceControlServerCallBacks )
at #GWeb.#VXM.#jYM(ICancellableOperationStatus , IReadOnlySourceControlServerCallBacks )
at #GWeb.#4Ec.#7Jc(ICancellableOperationStatus , IReadOnlySourceControlServerCallBacks )
at #GWeb.#4Ec.#t.#u3.#ofA(ICancellableOperationStatus )
at RedGate.SQLSourceControl.Engine.Cancellables.MutexedCancellableOperation`1.#t.#u3.#k5f()
at RedGate.SQLSourceControl.Engine.Cancellables.CancellableOperationBase.InvokeWithTracker(Action action)
at RedGate.SQLSourceControl.Engine.Cancellables.MutexedCancellableOperation`1.Invoke()
at #eEc.#Qlg.Invoke()
at #JLc.#PLc.#t.#Jfb.#EJf()
at RedGate.SQLSourceControl.Engine.SmartAssembly.ExceptionReporting.ErrorReporterBase.Do(Action , Predicate`1 , Boolean )
at RedGate.SQLSourceControl.Engine.SmartAssembly.ExceptionReporting.ErrorReporterBase.DoWithObviousExceptionsRethrowAll(Action action)
at RedGate.SQLSourceControl.CommonUI.Forms.ErrorDialog.DoWithObviousExceptionsRethrowAll(Action action)
at #JLc.#PLc.#CTc(ICancellableOperation`1 , Object )