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Possible Duplicate:
How do I install Firefox 4?

Is the the packages still not out ?

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marked as duplicate by Oli Mar 24 '11 at 10:29

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Duplicate with – Achu Mar 24 '11 at 9:29
I'm closing this as a duplicate because the other question (now linked at the top of your post) does answer your question. We're trying to keep a lid on the explosion of Firefox 4 questions coming out this week. – Oli Mar 24 '11 at 10:35

The latest version of Firefox is available for as a security updates in all supported releases of Ubuntu, just doing a normal update will pull it in.

Usually it's available within a few hours of Mozilla's announcement, sometimes faster, depending on the archive builders, and the speed of your local mirror, etc.

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I have updated the answer to accommodate the latest changes being the removal of stable firefox ppa. – nik90 Jan 29 '12 at 22:53

You have to add the PPA ppa:mozillateam/firefox-stable for the latest firefox.

Go to System -> Administration -> Update Manager -> Settings (Button) -> Other Software (tab) -> Add and then paste ppa:mozillateam/firefox-stable and Update.

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This answer is now incorrect, that PPA is being retired. – Jorge Castro Jan 29 '12 at 19:26

Here is another PPA ppa:ubuntu-mozilla-daily/ppa for FF 4.0 (Minefield)

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