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been unable to use firefox since upgrading to 3.6.11 version

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i can't log on in the internet using firefox since downloading/upgrading to the latest version which i believe is 3.6.11

i can't log on in the internet using firefox since downloading/upgrading to the latest version which i believe is 3.6.11

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This is usually caused by a firewall blocking the new version of Firefox. See Firefox can't load websites but other browsers can.