I'm running nginx 0.5.32 on a box running Solaris 10u3 as a load-balancing reverse proxy. We're seeing a lot of these messages in nginx-error.log:

2007/11/28 19:37:15 [alert] 27779#0: phantom event 0001 for closed and removed socket 106 2007/11/28 19:37:16 [alert] 27779#0: phantom event 0001 for closed and removed socket 141 2007/11/28 19:37:16 [alert] 27779#0: phantom event 0004 for closed and removed socket 81 2007/11/28 19:37:16 [alert] 27779#0: phantom event 0001 for closed and removed socket 112

There's usually a lot of them like that in a row, but they are short bursts, with a longer time between bursts (between a few minutes or an hour). What does this mean? Is it a real problem, and what can I do to fix it? We're not experiencing any serious problems; occaisionally the server will not respond to a request, but that may be an unrelated networking issue we're looking at.

I found this: http://www.lexa.ru/nginx-ru/msg12678.html , but I cannot read Russian, and I don't trust myself to guess at what that means. Since it was provided there, so I need to provide debug info for this?

I tried switching to the eventport module when I saw that this message is generated by the /dev/poll module, but that had problems with requests originating from the same host as the server, so that's not an option for us.