_SAmiC

Ah, so the way your system is setup (and since you can't change it) you should look here and use the highlighted line. Comment out the lines above it so it always uses the @@global.system_time_zone variable in your system. Then set your system and profile timezones back to normal and everything should be good.

function db_timezone() {
    //$timezone = db_get_variable('time_zone', 'global');
    //if ($timezone == 'SYSTEM')
        $timezone = db_get_variable('system_time_zone', 'global');

    return $timezone;
}

Cheers.