anchor.diff:  no_diff(Config) ->
       Method = proplists:get_value(ru_method, Config),
       FType = proplists:get_value(ftype, Config),
  -    [Start, End] = start_sync(Config, 4, 1000, [{fprob, 0}, {ftype, FType}], 
  +    {Start, End} = start_sync(Config, 4, 1000, [{fprob, 0}, {ftype, FType}], 
                                 1, 0.1, get_rep_upd_config(Method)),
       ?assert(sync_degree(Start) =:= sync_degree(End)).
   
   min_nodes(Config) ->
       Method = proplists:get_value(ru_method, Config),
       FType = proplists:get_value(ftype, Config),
  -    [Start, End] = start_sync(Config, 1, 1, [{fprob, 50}, {ftype, FType}], 
  +    {Start, End} = start_sync(Config, 1, 1, [{fprob, 50}, {ftype, FType}], 
                                 1, 0.2, get_rep_upd_config(Method)),
       ?assert(sync_degree(Start) =:= sync_degree(End)).    
   
   simple(Config) ->
       Method = proplists:get_value(ru_method, Config),
       FType = proplists:get_value(ftype, Config),
  -    [Start, End] = start_sync(Config, 4, 1000, [{fprob, 10}, {ftype, FType}], 
  +    {Start, End} = start_sync(Config, 4, 1000, [{fprob, 10}, {ftype, FType}], 
                                 1, 0.1, get_rep_upd_config(Method)),
       ?assert(sync_degree(Start) < sync_degree(End)).
   
   multi_round(Config) ->
       Method = proplists:get_value(ru_method, Config),
       FType = proplists:get_value(ftype, Config),
  -    [Start, End] = start_sync(Config, 4, 1000, [{fprob, 10}, {ftype, FType}], 
  +    {Start, End} = start_sync(Config, 4, 1000, [{fprob, 10}, {ftype, FType}], 
                                 3, 0.1, get_rep_upd_config(Method)),
       ?assert(sync_degree(Start) < sync_degree(End)). 
   
  
positive.code: get_symmetric_keys(NodeCount) ->
      [element(2, intervals:get_bounds(I)) || I <- intervals:split(intervals:all(), NodeCount)].
  
  build_symmetric_ring(NodeCount, Config, RepUpdConfig) ->
      {priv_dir, PrivDir} = lists:keyfind(priv_dir, 1, Config),
      % stop ring from previous test case (it may have run into a timeout)
      unittest_helper:stop_ring(),
  
negative.code:     FType = proplists:get_value(ftype, Config),
      OldConf = get_rep_upd_config(Method),
      Conf = lists:keyreplace(rr_max_items, 1, OldConf, {rr_max_items, 500}),    
      {Start, End} = start_sync(Config, 4, 1000, [{fprob, 100}, {ftype, FType}], 
                                1, 0.1, Conf),
      ?assert(sync_degree(Start) < sync_degree(End)).
  
  