Worker processes not shutting down

[runesoerensen]

nginx -V returns:

nginx version: nginx/1.2.0
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --conf-path=/etc/nginx/nginx.conf
--error-log-path=/var/log/nginx/error.log
--http-client-body-temp-path=/var/lib/nginx/body
--http-fastcgi-temp-path=/var/lib/nginx/fastcgi
--http-log-path=/var/log/nginx/access.log
--http-proxy-temp-path=/var/lib/nginx/proxy
--http-scgi-temp-path=/var/lib/nginx/scgi
--http-uwsgi-temp-path=/var/lib/nginx/uwsgi --lock-path=/var/lock/nginx.lock
--pid-path=/var/run/nginx.pid --with-debug --with-http_addition_module
--with-http_dav_module --with-http_geoip_module
--with-http_gzip_static_module --with-http_image_filter_module
--with-http_realip_module --with-http_stub_status_module
--with-http_ssl_module --with-http_sub_module --with-http_xslt_module
--with-ipv6 --with-sha1=/usr/include/openssl --with-md5=/usr/include/openssl
--with-mail --with-mail_ssl_module
--add-module=/build/buildd/nginx-1.2.0/debian/modules/nginx-auth-pam
--add-module=/build/buildd/nginx-1.2.0/debian/modules/nginx-echo
--add-module=/build/buildd/nginx-1.2.0/debian/modules/nginx-upstream-fair
--add-module=/build/buildd/nginx-1.2.0/debian/modules/nginx-dav-ext-module

I've only seen the issue in a production environment where it's difficult to
test with vanilla nginx

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,221591,232122#msg-232122