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My Norton 360 Toolbar is missing on my Desktop but present on my Laptop. How do I get it back on the Desktop?

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I upgraded to Firefox 4.0 on my Desktop and lost my Norton 360 Premier toolbar. I have Firefox 3.6.16 on my laptop & the toolbar is still there.

How can I re-add my Norton toolbar to my Desktop's version of Firefox? If this isn't possible, how do I downgrade back to Firefox version 3.6.16.?

I want & need my Norton toolbar on the Desktop.

I upgraded to Firefox 4.0 on my Desktop and lost my Norton 360 Premier toolbar. I have Firefox 3.6.16 on my laptop & the toolbar is still there. How can I re-add my Norton toolbar to my Desktop's version of Firefox? If this isn't possible, how do I downgrade back to Firefox version 3.6.16.? I want & need my Norton toolbar on the Desktop.

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Symantec have released updates for Norton 360 and Norton Internet Security to make them compatible with Firefox 4, for details see http://community.norton.com/t5/Norton-Internet-Security-Norton/Firefox-4-compatibility-hotfix-is-now-available/td-p/428894