Firefox 4 has been released recently and it is not available via update manager in Ubuntu 10.04 Lucid Lynx and 10.10 Maverick Meerkat. The Ubuntu Mozilla Daily Build PPA provides it but it always the latest daily build and not the stable version.

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Firefox 4 is currently in beta and not available in the Fedora repository. However, it can be installed by adding Spot repository from FedoraPeople. To install, open up the terminal and run the following from terminal as root (to be root, run su and enter root password): Continue Reading

The latest stable version of Firebug is 1.6 which is compatible with Firefox 3.x. If you have Firefox 4 as your default browser, you may be miss this extension. Firebug 1.7 is under development and the latest version available at the time of this writing is 1.7X.0a7. You can install it from Firebug 1.7 releases page. Note that it is still in alpha stage of development and may have several bugs.

I have installed Firefox 4 in my Debian Testing installation from Launchpad PPA. It is quite stable and I have decided to use it instead of Firefox 3. Most of the addons I used is compatible with Firefox 4 by now. However, the version of Greasemonkey available in Mozilla Firefox Addons Site is not compatible with Mozilla Firefox v4 latest build. To install the latest nightly build of Greasemonkey, I went to Greasemonkey Nightly Download and installed it. However Greasefire is not available, we can install userscripts directly from Userscripts website for now.

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