<literal>upgrade_notification</literal> parameter, see
<xref linkend="parameters"/>. Administrators will see these
notifications when they access the <filename>index.cgi</filename>
- page, i.e. generally when logging in. Bugzilla will check once a
- week for new releases, unless the parameter is set to
- <quote>disabled</quote>.
+ page, i.e. generally when logging in. Bugzilla will check once per
+ day for new releases, unless the parameter is set to
+ <quote>disabled</quote>. If you are behind a proxy, you may have to set
+ the <literal>proxy_url</literal> parameter accordingly. If the proxy
+ requires authentication, use the
+ <literal>http://user:pass@proxy_url/</literal> syntax.
</para>
</section>