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Firefox Browser working very slow in my UBUNTU 10.10. I use Mobile to connect either via blue tooth or cable.

Is any tips to make it fast

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The speed issue might not be Firefox, but rather the connection speeds you're getting over your mobile tether. There's no way to increase the speeds if that is the case.

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Disable ipv6:

  • Type about:config in the address bar, press Enter.
  • Find network.dns.disableIPv6 in the list.
  • Right-click -> Toggle.
  • Restart Firefox and try again.

See more common Firefox issues and solutions at

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