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[gene <788274@xxxxxxxxxxxxxxxxxx>]

With the option "hosts:    files dns " in /etc/nsswitch.conf things seem
to get better, however as before I still cannot get cnews.ru to load as
in the previous case with both firefox and epiphany-browser . As far as
the chromium-browser is concerned, it mostly loads never finishing
though. The dumps are given below.

The tcpdump Ubuntu 10.10 where slow lookups never occur. The freshly
upgraded firefox 7 takes a fraction of a second to load the notorious
cnews.ru. Amazing! The dumps are attached below as well .


** Attachment added: "fastff.tcpdump"
   https://bugs.launchpad.net/bugs/788274/+attachment/2472422/+files/fastff.tcpdump

** Attachment added: "fasterchr.tcpdump"
   https://bugs.launchpad.net/bugs/788274/+attachment/2472423/+files/fasterchr.tcpdump

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https://bugs.launchpad.net/bugs/788274

Title:
  dns lookup issue:  firefox& chromium take very long to load  on Ubuntu
  Narwhal

Status in “chromium-browser” package in Ubuntu:
  New
Status in “firefox” package in Ubuntu:
  New
Status in “kdebase” package in Ubuntu:
  New

Bug description:
  I have 3 PCs with different Ubuntu versions 10.04, 10.10 and 11.04.
  In all of these firefox4, chromium, epiphany and konqueror are pretty fast, except on Narwhal when visiting web pages with javascript.
  I noticed that on 11.04:

  1) it happens on all js-capable browsers
  2) pages without js are rendered alright
  3) when js is disabled on firefox4 it seems to speed up some not all, though, e.g. it does for cnews.ru, but not for launchpad.net (which never loads)
  4) w3m-img,elinks,lynx are fast and load those pages in questions alright
  5)none of these problems exist on 10.04 or 10.10 with web browsers of the same versions
  6) it is an Ubuntu 11.04 only issue, does not happen on older version of Ubuntu
  7) does not seem to be an ipv4/ipv6 issue, since on firefox I set ipv6.disable to true
  On the affected machine (as well as on the others) I got a custom kernel installed.
  uname -a: Linux  2.6.38.5-mine #1 SMP Wed May 4 12:28:50 CDT 2011 i686 i686 i386 GNU/Linux

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