Bug#645017: iceweasel is unbearably slow at navigating to urls.

[Mike Hommey]

On Tue, Oct 11, 2011 at 09:51:20PM +0200, join_doe wrote:
> Package: iceweasel
> Version: 7.0.1
> Severity: important
> 
> Dear Maintainer,
> *** Please consider answering these questions, where appropiate ***
> 
>    * What led up to the situation?
>         About a couple of weeks ago i updated my system. Cant remember the
> exact time og the packages installed.
>         At some point after the update I noticed that browsing the web was
> extremely slow. At first i thought it was my connection and so started testing
> its download speed - I have 20mb connection.
>         It turned out thought the download speed was fine.
>         What i discovered was that the initial connection to a site was what
> took soooo long. Once the page was loaded navigating the site went at normal
> speed.
>         However as soon at one navigated to another domain then the initial
> loading would take for ever.
>         Ive tried uninstalling all addons, and running in safe-mode. Ive even
> tried chaning the dns server, but neither helped.
>         Ive noticed that the same problem occurs i epiphany, so I am presuming
> that a common library is the culprit.
> 
>         I've since uninstalled iceweasel and epiphany out of frustration, and
> Im now using chrome which does not have the proble - pages load within a
> second, whereas iceweasel takes about 10 secs or more.
> 
>         I hope this helps.

Can you try going to about:config, searching for
network.dns.disableIPv6, set that to true, and try again?

Mike