502 bad gateway error with php5-fpm on Debian 7

[Wolfsrudel]

Dump question, but why did you put the vhost-files into "conf.d"? Normally
they are stored in "sites-available" and symlinked in "sites-enabled". nginx
(as apache) uses this directory to read all information about the vhosts.
Are there any templates in "sites-enabled"? How do they look like?

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,236396,236413#msg-236413