blog post | FAQ Hammerhead adds a tab to Firebug for measuring the load time of web pages. To install: install Firebug install Hammerhead In Firefox 3, if you get this error: "Hammerhead" will not be installed because it does not provide secure updates. follow these steps: enter "about:config" into address bar right click somewhere in the list of keys below; select New->Boolean enter "extensions.c