Mage::log is not performing as expected

Question

I have extended Mage_Cms_IndexController so that I can log my 404 pages. Within that class I have...

public function noRouteAction($coreRoute = null)
{
    $this->getResponse()->setHeader('HTTP/1.1','404 Not Found');
    $this->getResponse()->setHeader('Status','404 File not found');
    //Begin Modification
    Mage::log('My log data', null, '404s.log');
   //End modification
    $pageId = Mage::getStoreConfig(Mage_Cms_Helper_Page::XML_PATH_NO_ROUTE_PAGE);
    if (!Mage::helper('cms/page')->renderPage($this, $pageId)) {
        $this->_forward('defaultNoRoute');
    }
}

System logs are enabled and /var as well as /var/log are chmod to 777.

Answer 1

Have you tried forceLog = true?

Mage::log('My log data', null, '404s.log', true);