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No matter how many times I try to upgrade or reinstall, it always installs an older version that allows pop ups and viruses to keep coming back. How do I upgrade to the latest version of firefox if it only somehow always restores the previous version?

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No matter what I do, I cannot upgrade firefox, and as a result, almost every site I go on that no longer supports my browser keeps telling me to upgrade, and I keep getting back unwanted viruses. Each time I try to reinstall or upgrade firefox, all it does continuously is reinstall the old version I had previously.

This happened

Every time Firefox opened

== Firefox Upgraded Their Browsers

No matter what I do, I cannot upgrade firefox, and as a result, almost every site I go on that no longer supports my browser keeps telling me to upgrade, and I keep getting back unwanted viruses. Each time I try to reinstall or upgrade firefox, all it does continuously is reinstall the old version I had previously. == This happened == Every time Firefox opened == Firefox Upgraded Their Browsers

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Your UserAgent string in Firefox is messed up by another program that you installed, and those websites don't know you are running Firefox 3.6.3 (which is what you do have installed). http://en.wikipedia.org/wiki/User_Agent

type about:config in the URL bar and hit Enter If you see the warning, you can confirm that you want to access that page. Filter = general.useragent. Right-click the preferences that are bold, one line at a time, and select Reset, Then restart Firefox