ubuntu - Error 500 when using "WWW", [notice] caught SIGTERM, shutting down -

i error 500 when try load 1 of sites "www".

www.catherinesmith.net

without www, works fine. have multiple sites hosted using vhosts. have ruled out vhost config deleting , replacing site working fine, substituting in domain.

[wed aug 28 20:56:06 2013] [notice] caught sigterm, shutting down

[wed aug 28 20:56:07 2013] [notice] apache/2.2.22 (ubuntu) php/5.3.10-1ubuntu3.7 suhosin-patch configured -- resuming no$

i have ruled out of files in site folder deleting , making index.php "hi" in it.

i disabled site vhost, should point main ip (which lists hosted sites). catherinesmith.net loads fine, www.catherinesmith.net still gives error 500! i'm pulling hair out on one. have no idea what's causing or else can try...

vhost:

<virtualhost *:80>     serveradmin webmaster@localhost     documentroot /var/www/catherinesmith.net      #custom     servername catherinesmith.net     serveralias www.catherinesmith.net     php_admin_value open_basedir /var/www/catherinesmith.net/:/tmp/     #custom      <directory />             options followsymlinks             allowoverride     </directory>     <directory /var/www/catherinesmith.net/>             options indexes followsymlinks multiviews             allowoverride             order allow,deny             allow     </directory>      scriptalias /cgi-bin/ /usr/lib/cgi-bin/     <directory "/usr/lib/cgi-bin">             allowoverride none             options +execcgi -multiviews +symlinksifownermatch             order allow,deny             allow     </directory>      errorlog ${apache_log_dir}/error.log      # possible values include: debug, info, notice, warn, error, crit,     # alert, emerg.     loglevel warn      customlog ${apache_log_dir}/access.log combined  alias /doc/ "/usr/share/doc/" <directory "/usr/share/doc/">     options indexes multiviews followsymlinks     allowoverride none     order deny,allow     deny     allow 127.0.0.0/255.0.0.0 ::1/128 </directory>     directoryindex index.php index.html </virtualhost> 

how set virtual host www/without alias?

just looked @ mine , have set example: http://httpd.apache.org/docs/2.2/vhosts/examples.html#intraextra

<virtualhost 192.168.1.1 172.20.30.40>     documentroot /www/server1     servername server.example.com     serveralias example.com </virtualhost>  

what surprising sigterm/restart error if virtual host definition issue.