delgate-alt always missed block, the  reliability  is only  59.49%.
I have see the debug message, every time when  I missed block, the rebraodcast_pending was called with a high latency.
not missed, block 15080
   20140720T231440.007245       th_a   apply_transactions ] Applying transactions from block: 15080      chain_database.cpp:962
  20140720T231440.007312       th_a      execute_markets ] execute markets []     chain_database.cpp:1182
  20140720T231441.788079       th_a  rebroadcast_pending ] rebroadcasting...      client.cpp:857
  20140720T231441.788197       th_a  rebroadcast_pending ] rebroadcasting...      client.cpp:857
missed, block 14971
   20140720T225620.008000       th_a   apply_transactions ] Applying transactions from block: 14971      chain_database.cpp:962
  20140720T225620.008105       th_a      execute_markets ] execute markets []     chain_database.cpp:1182
  20140720T225629.770625       th_a  rebroadcast_pending ] rebroadcasting...      client.cpp:857
  20140720T225629.770730       th_a  rebroadcast_pending ] rebroadcasting...      client.cpp:857
not missed, block 14888
  20140720T224220.008251       th_a   apply_transactions ] Applying transactions from block: 14888      chain_database.cpp:962
  20140720T224220.008319       th_a      execute_markets ] execute markets []     chain_database.cpp:1182
  20140720T224224.754508       th_a  rebroadcast_pending ] rebroadcasting...      client.cpp:857
  20140720T224224.754577       th_a  rebroadcast_pending ] rebroadcasting...      client.cpp:857
missed, block  14649
  20140720T220210.011105       th_a   apply_transactions ] Applying transactions from block: 14649      chain_database.cpp:962
  20140720T220210.012315       th_a      execute_markets ] execute markets []     chain_database.cpp:1182
  20140720T220210.012778       th_a store_balance_record ] balance record: {"balance":16394400,"condition":{"asset_id":0,"delegate_slate_id":5360468550988535606,"type":  "withdraw_signature_type","data":{"owner":"BTSXDAKNtbVobxaYtLTu4QqdKLsgh2dQA2F5P","memo":{"one_time_key":"B  20140720T220210.011105       th_a   apply_transactions ] Applying transactions from block: 14649      chain_database.cpp:962
TSX5pP2PcD7or578RUGu752Dgrh3TPnfawpFV2TBcQo5wFWmG9TGD","enc  rypted_memo_data":"53b5be02a0adc07bf331e2a7f5b2a7ad53aa16d88ba6b00be555b1a42b369131db17d2c3cff05118e212047f79cff39f25b60ba274e2aa535ded27d9542e1a2b"}}},"genesis_info"  :null,"last_update":"20140720T220  20140720T220210.012315       th_a      execute_markets ] execute markets []     chain_database.cpp:1182
200"}      chain_database.cpp:1816
  20140720T220219.703103       th_a  rebroadcast_pending ] rebroadcasting...      client.cpp:857
  20140720T220219.703280       th_a  rebroadcast_pending ] rebroadcasting...      client.cpp:857