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Firefox works fine for a while then slows down until there's no internet connection at all. After closing firefox and restarting (after I had to end process in system monitor) internet works fine again.

I've tried with reinstalling it again and making new profile, didn't help.

ubuntu 12.04 LTS

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Seems with the new firefox update the problem is gone – Mukkii Jul 1 '13 at 13:02

What add-ons are you using? HTTPS-Everywhere by any chance? It seems to be causing those problems.

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have no add-ons – Mukkii Jun 21 '13 at 18:39

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