HTTPU failed to pass I/O subsystem to the Dispatcher

Коллеги, добрый день!

Подскажите пожалуйста, что означают след. строчки в логах:

11:38:21.664 1 HTTPU-280050([172.30.1.182]) failed to pass I/O subsystem to the Dispatcher
11:38:52.476 1 HTTPU-280254([172.30.1.182]) failed to pass I/O subsystem to the Dispatcher
11:39:07.351 1 HTTPU-280329([172.30.1.182]) failed to pass I/O subsystem to the Dispatcher
11:39:46.634 1 HTTPU-280498([172.30.1.182]) failed to pass I/O subsystem to the Dispatcher
11:41:01.230 1 HTTPU-280818([172.30.1.182]) failed to pass I/O subsystem to the Dispatcher
11:41:16.105 1 HTTPU-280842([172.30.1.182]) failed to pass I/O subsystem to the Dispatcher

Версия CGP: 6.0 (x86_64) Получено Tue Dec 25 08:19:56 2012