Nginx stuck on startup

[xfce4]

Hi everyone,

Recently I've needed to restart nginx on my vps (which is debian wheezy) and
it got stuck. Other services are fine but nginx not responding if there is a
file operation involved. For example nginx -h prints out fine, but nginx -t
is just waiting. How can I examine problem?

dmesg and messages are clean. disk and memory usage is not even %50.

This is probably not an nginx-specific error but it's disturbing. I've tried
to downgrade nginx a bit but not worked.

Thanks for any suggestions.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,242101,242101#msg-242101