If you are upgrading from an earlier version of glFusion, you should merge your old siteconfig.php with the new siteconfig.php.dist included with glFusion v1.1.4. The following new configuration options were added with glFusion v1.1.4.
// +--------------------------------------------------------------------------+ // | Skip IP Check - disables glFusion's checking of the long term cookie | // | against the user's IP address. | // | | // | As a security precaution, glFusion validates that the IP address used | // | to set the long term cookie matches the IP address of the user each time | // | it is checked. This can cause issues for users who change IPs often, | // | for example, if they are behind a proxy server farm. | // | | // | If this value is set to true, the IP address will not be checked. | // +--------------------------------------------------------------------------+ $_SYSTEM['skip_ip_check'] = false;