'sudo nginx -s reload' and 'nginx -t' started to need a minute to complete

[Mark Alan]

While using Ubuntu 10.10+Nginx0.9.3+php5-fpm 5.3.3-1ubuntu9.1:

Do you know of any reason for 'sudo nginx -s reload' and 'nginx -t'
suddenly start needing almost a minute to complete?


while using:
server {
	listen example.org:80;
	server_name www.example.org .example.com 192.168.2.18;
	rewrite ^(.*) http://example.org$1 permanent;
}
server {
	listen example.org:80 default_server;
	server_name example.org;
.../...

$ time sudo nginx -s reload
  real	0m0.354s
  user	0m0.336s
  sys	0m0.012s


after adding:
server {
	listen example.com:80;
	server_name www.example.com;
	rewrite ^(.*) http://example.com$1 permanent;
}
server {
	listen example.com:80;
	server_name example.com;
.../...

$ time sudo nginx -s reload
real    0m56.152s
user    0m0.077s
sys     0m0.016s

$ nginx -V
nginx: nginx version: nginx/0.9.3
nginx: TLS SNI support enabled
nginx: configure arguments: --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
--lock-path=/var/lock/nginx.lock --pid-path=/var/run/nginx.pid
--prefix= --with-http_ssl_module --without-http_limit_req_module
--without-mail_pop3_module --without-mail_smtp_module
--without-mail_imap_module --without-http_split_clients_module
--without-http_uwsgi_module --without-http_scgi_module
--without-http-cache

$ cat /etc/hosts
127.0.0.1       localhost
192.168.2.17  mail.example.com example.com www.example.com example.org
www.example.org
192.168.2.18  mail.example.tld example.tld www.example.tld

cat /etc/network/interfaces 
auto lo
iface lo inet loopback
# Load IPTABLES firewall rules
pre-up iptables-restore < /etc/iptables.up.rules
auto eth0
#iface eth0 inet dhcp
iface eth0 inet static
        address 192.168.2.17
        network 192.168.2.0
        netmask 255.255.255.0
        broadcast 192.168.2.255
        gateway 192.168.2.1
auto eth0:0
iface eth0:0 inet static
        address 192.168.2.18
        network 192.168.2.0
        netmask 255.255.255.0
        broadcast 192.168.2.255
        gateway 192.168.2.1

Thank you.

M.