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which version of mozilla firefox is running on my computer

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tried to download Mozilla 4 , doesn't look like anything changed on my desk top page

tried to download Mozilla 4 , doesn't look like anything changed on my desk top page

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You are running Firefox 3.6.16. See here at right side of your post the System Details.

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Your user agent string is "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.16) Gecko/20110319 Firefox/3.6.16", that shows you are using Firefox 3.6.16

In the Help menu select "Check for Updates" and it should offer to install Firefox 4

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From the firefox button or from the menu toolbar

What version does it show you are using ?

Your system information suggests it is version 3.6.16 . Maybe you did not get the upgrade download, or have not restarted your computer yet.

There are a number of reasons upgrading may fail for more information look at:

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