Problem Ctimer

I try to use RTimer, and the first time work, but the second time phone reboot.
I use itimer->after(status, time) to start timer and itimer->cancel for delete timer pendent.
After cancel i must restart timer? I think that application chrash when recall itimer->after(status, time), but why?
Thanks
Silvia

I return to use CTimer, now application go to timeExipred for two time, but the therd time jump to runL without give timeexpired, why?
Its a very very problem for me

My code:

void CgprsConnection::ConnectL()
    {
    
    // Initiate connection process
    if ( iEngineStatus == ENotConnected )
        {
        isConnect=1;
        TInt code = 55;
        while((code = iSocketServ.Connect()) != KErrNone)
    	{
    		User::After(3000000); 
		
    	}
       
        
		
        
        
        RConnection conn;

        _LIT(KRasAddr,"ip");
        
        destAddr.Input(KRasAddr);
        destAddr.SetPort(KDefaultPortNumber);
       
     
        // Connect to the socket server
        // Open an RConnection object. Note that you must provide the RSocketServ object
        conn.Open(iSocketServ);
        conn.GetIntSetting(KSetting, codice);

       
        // Start an Outgoing Connection with overrides
        conn.Start(prefs);

        // Open a Host Resolver associated with the connection
        RHostResolver hr;
        hr.Open(iSocketServ, KAfInet, KProtocolInetTcp, conn);

        // Open a Socket associated with the connection
        User::LeaveIfError(sock.Open(iSocketServ, KAfInet, KSockStream, KProtocolInetTcp, conn));
	    
        
        sock.Connect(destAddr, iStatus);
        ChangeStatus( EConnecting );
           
        // Request time out
        
        iTimer->After( /*timerStatus,*/KTimeOut );
               	
        
		    	
		SetActive();
	  	
	      }
    
  
    
    	
    }



void CgprsConnection::TimerExpired()
	{

    Cancel();
    Disconnect();
	ChangeStatus( ENotConnected );
	
	ConnectL();
   }


void CgprsConnection::Disconnect()
    {
	delete iTimer;
	iTimer = NULL;
	iTimer = CTimeOutTimer::NewL( EPriorityHigh, *this );
	sock.CancelAll();
	sock.CancelConnect();
	sock.Close();
	iSocketServ.Close();
	ChangeStatus( ENotConnected );
    isConnect=1;
    }

Some idea?
Many thanks
Silvia

ok, sorry

void CgprsConnection::RunL()
{
iTimer->Cancel();

switch( iEngineStatus )
{
    case EConnecting: 
    	{
			if ( iStatus == KErrNone )
			{
				ChangeStatus( EConnected );
				isConnect =0;
				SendMessage();
			}
			else
			{
				ChangeStatus( ENotConnected );
				isConnect=1;
				Disconnect();
				User::After(1000000); //3000000 
				delete iTimer;
				iTimer = NULL;
				iTimer = CTimeOutTimer::NewL( EPriorityHigh, *this );
				ConnectL(); //riprovo a connettermi
			}
    	
        break;
    	}
     case EControl:
     {
		
     	 if ( iStatus == KErrNone )
         { 
	         ChangeStatus(EConnected);
	         isConnect=0;
	         ReadMessage(); 
		 
	   }
		else
		{
			ChangeStatus( ENotConnected );
			isConnect=1;
			Disconnect();
			User::After(1000000); //3000000 
			ConnectL(); //riprovo a connettermi
		}	
		break;
     }    
     case EClosed:
     {
       	Disconnect();
     	break;
     }   
     case ENotConnected:
    	 {
    	 isConnect=1;
	 	Disconnect();
			User::After(1000000); //3000000 
			delete iTimer;
			iTimer = NULL;
			iTimer = CTimeOutTimer::NewL( EPriorityHigh, *this );
			
			
			ConnectL(); //riprovo a connettermi
    	  break;
    	 }
     	
     default:
     {
		
	 	
     } 
     break;

 };
    

}

Many Thanks
Silvia

The strange event is that for 4 time application go to inside timeexpired (and is correct!!!) ,instead the 5 time application go inside runL, is very very strange

But is problem of socket or timer?