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от Lchen9MZ Апрель 22, 2010 · permalink

The below link has an .xpi works on my FF 3.6.3

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Installed Firefox 3.5 but Duplicate tab isn’t working? | nickriebe.com
September 12, 2009
http://nickriebe.com/installing-to-firefox-3-5-but-duplicate-tab-isnt-working/