anchor.diff:  		{ok, UserMod, UserData} ->
   		    handle_error(UserId, UserMod, Reason, ReqId, 
   				 UserData, State);
  -		_Error ->
  +		_Error1 ->
   		    case snmpm_config:user_info() of
   			{ok, DefUserId, DefMod, DefData} ->
   			    handle_error(DefUserId, DefMod, Reason, 
   					 ReqId, DefData, State);
  -			_Error ->
  +			_Error2 ->
   			    error_msg("failed retreiving the default user "
   				      "info handling snmp error "
   				      "<~p,~p>: ~n~w~n~w",
   				      [Domain, Addr, ReqId, Reason])
   		    end
   	    end;
  -	_Error ->
  +	_Error3 ->
   	    case snmpm_config:user_info() of
   		{ok, DefUserId, DefMod, DefData} ->
   		    handle_error(DefUserId, DefMod, Reason, 
   				 ReqId, DefData, State);
  -		_Error ->
  +		_Error4 ->
   		    error_msg("failed retreiving the default user "
   			      "info handling snmp error "
   			      "<~p,~p>: ~n~w~n~w",
  
positive.code: 
  handle_snmp_error(CrapError, Reason, _State) ->
      error_msg("received crap (snmp) error =>"
  	      "~n~p~n~p", [CrapError, Reason]),
      ok.
  
  handle_snmp_error(Domain, Addr, ReqId, Reason, State) ->
  
      ?vtrace("handle_snmp_error -> entry with~n"
  	    "   Domain:  ~p~n"
  	    "   Addr:    ~p~n"
  	    "   ReqId:   ~p~n"
  	    "   Reason:  ~p", [Domain, Addr, ReqId, Reason]),
  
      case snmpm_config:get_agent_user_id(Domain, Addr) of
  	{ok, UserId} ->
  
negative.code: handle_snmp_pdu(#pdu{type = 'get-response', request_id = ReqId} = Pdu, 
  		Domain, Addr, State) ->
  
      ?vtrace("handle_snmp_pdu(get-response) -> entry with"
  	    "~n   Domain:  ~p"
  	    "~n   Addr:    ~p"
  	    "~n   Pdu:     ~p", [Domain, Addr, Pdu]),
  
      case ets:lookup(snmpm_request_table, ReqId) of
  
  