Here is another sample from the log:
2012-01-14T19:10:53.528Z cpu3:2082)NetPort: 1427: disabled port 0x1000021
2012-01-14T19:10:53.528Z cpu3:2082)Net: 2195: disconnected client from port 0x1000021
2012-01-14T19:10:53.569Z cpu2:19779)Net: 2173: 0x1000021: can't access port