Последние версии nginx'а стали что-то падать on signal 11. В error.log
этому кажется соответствует
2005/12/05 10:49:45 [info] 24523#0: *385305 kevent() reported that client
closed prematurely connection, so upstream connection is closed too (54:
Connection reset by peer) while sending request to upstream, client: x.x.x.32,
server:y.y.y.ru, URL: "/XXX/XXX/XXX.xx", upstream:
";, host: "y.y.y.ru", referrer:
";
2005/12/05 10:49:45 [notice] 86332#0: signal 20 (SIGCHLD) received
2005/12/05 10:49:45 [alert] 86332#0: worker process 24523 exited on signal 11
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