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I've downloadedthe Firefox 4 update twice, but i restar everything and it still shows the old version. How can i make Firefox 4 work on my computer?

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I have an Acer Aspire One Netbook with Windows 7 Starter

I have an Acer Aspire One Netbook with Windows 7 Starter

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Did you run the Firefox installer after having downloaded and saved the file to the desktop?

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I'm not sure, how do I do that?