Why fast dial is not compatible with firefox 5?

You can try this extension to override compatibility issues, * https://addons.mozilla.org/en-US/firefox/addon/add-on-compatibility-reporter/ Once it is installed, open Addons Manager and re-enable fast-dial addon in there. Addons Manager URL:    '''about:addons'''

Install Fastdial from this location, https://addons.mozilla.org/en-US/firefox/addon/fast-dial-5721/versions/ working well