How to fix Firefox slow problem in ubuntu 10.04(Lucid)

This tutorial will explain how to fix Firefox slow problem in ubuntu 10.04(Lucid)

Open your Firefox and type about:config at URL address bar and hit enter. To make a False into True, select the line to change, and double click. On the 2nd option change, right click and select Modify

-- network.http.pipelining > Make it True

-- network.http.pipelining.maxrequests > Make it 8 or 10

-- network.http.proxy.pipelining > Make it True

-- network.dns.disableIPv6 > Make it True

I hope this helps for some users

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98 thoughts on “How to fix Firefox slow problem in ubuntu 10.04(Lucid)

  1. I installed Ubuntu 10.04 on my friend’s laptop. And after a month he told me that FireFox is so slow, so I sent him the link and it worked finally. 🙂

    Thank you.

  2. It’s still slow … I think the problem is with javascript … firefox’s working slow

  3. The disable ipv6 solved my problem of firefox not accessing websites. Good job, thanks. I suspect there are many out there that could use this tidbit of yours.

  4. Great job, iv been looking for a fix to this problem for a bit. Could do with this info posted on ubuntu problems. 🙂

  5. I made these changes with little effect. What finally made Firefox perform as it should was editing the way Firefox connects to the Internet, and checking the “no Proxy” box. That simple change made all the difference.

  6. Had been using this since earlier ubuntu versions, got say thanks for the help!

  7. Very smart. The changes made a leap. I would appreciate it if you have the time to explain why these changes make that difference.

    Thanks again

  8. Made my day. I couldn’t figure out why XP in a VirtualBox was going so much faster than Firefox on the host. I think it was checking IPv6 DNS timing out then dropping to v4

    Thank you!

  9. I have tried this along with a shell script that makes all of these changes for you(and more). But I still have the same SLOW connection to my network. I have Ubuntu Lucid on an x86 system. I’m not sure what’s going on with my setup, but if anyone out there can help it would he greatly appreciated!

  10. OH MY GOD THANK YOU! I usually use Chromium day-to-day and Firefox for development, but it was so slow I just couldn’t get anything done. I was really starting to miss Firefox, but this made it faster than ever

  11. :S
    Works awesome.
    But most important: what is the cause of this? Is there a problem in Ubuntu?

  12. I applied the changes above and it was still very slow for me.

    cat /etc/resolv.conf

    Showed 3 DNS lookup sites… the first one was pointing to my Comcast Modem address. (I think…

    My guess is the reason Windows IE Explorer is fast is because it probably uses all 3 address and responds to the one that responds first for DNS lookup.

    Whereas Firefox appears to be looking at the first one… timing out. (Because it wasn’t valid) then tried the 2nd one… worked.

    Next URL, try first one, bad, try next one good.
    That’s my guess based on what I was seeing…

    To fix, I changed the order of the DNS entries and put the Cable Modem last… I should probably just remove it.

    If you don’t know what to put for your DNS, you might try calling your ISP and see what they recommend. If your router is set up for DHCP, then it’s settings will automatically propagate to your networks settings.

  13. This remains a problem when using Firefox with Ubuntu 10.10 as well. Your instructions fixed my issue so thanks very much!

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