502 errors with nginx and php5-fpm

[nfn]

Hi,

I'm getting lots of 502 errors but my nginx logs and php logs don't give me
information that can help me identify the problem.

I only have the 502 errors in the access logs. I don't see any errors in the
error.log or php logs.

Fist, how can I configure nginx and php so I can get more information about
the problem?

I already increase fastcgi buffers and php memory limit without success.

Some help would be appreciated.

Thanks

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,253117,253117#msg-253117