KERN EXEC 0 panic at second use of an RObject and not on first

i am getteing a KERN EXEC 0 panic on second use of an RObject and not on first.
i am really confused cause this panic occurs if RObject is uninitialised , in such case it should occur in first case also. see code below. am using a rmUTEX oBJECT.


RMutex iInitParamMutex;

//in ConstructL()
iInitParamMutex.CreateLocal();

///somewhere else

iInitParamMutex.Wait();
iTimeOutTimer->Start(iInitParams->iTimeOutPeriod,
      iInitParams->iTimeOutPeriod ,
      TCallBack(CCommandHandler::TimeOut,this));
iInitParamMutex.Signal();



now panic occurs at iInitParamMutex.Signal();

can any one please give some reasons.
thanks.