[Bug 408984] [NEW] Extremely slow tab switching on Launchpad pages

[Lech Lorens]

Public bug reported:

Binary package hint: firefox-3.5

Rendering Launchpad pages is extremely slow in Shiretoko. E.g. Shiretoko
takes about 30 seconds to switch between tabs
https://launchpad.net/ubuntu/+source/firefox-3.5 and
https://launchpad.net/ubuntu/+mentoring, while in normal situation a tab
switch takes less than 1 second. When Shiretoko freezes to handle the
tab switch, top reports that the X.org process takes up 100% CPU. I am
running X.org (version 2:1.6.0-0ubuntu14) in a dual-head setup with one
of the monitors rotated by 90° with Xinerama enabled on Nvidia GeForce
FX 5200. I am using the 173.14.16 Nvidia binary drivers (nvidia-173
-kernel-source - version 173.14.16-0ubuntu01).

Ubuntu 9.04.
Package versions:
firefox 3.5.1+build1+nobinonly-0ubuntu0.9.04.1,
nvidia-173-kernel-source 173.14.16-0ubuntu01

** Affects: firefox-3.5 (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  Binary package hint: firefox-3.5
  
- Switching tabs on Launchpad pages is extremely slow in Shiretoko. E.g.
- Shiretoko takes about 30 seconds to switch between
+ Rendering Launchpad pages is extremely slow in Shiretoko. E.g. Shiretoko
+ takes about 30 seconds to switch between tabs
  https://launchpad.net/ubuntu/+source/firefox-3.5 and
  https://launchpad.net/ubuntu/+mentoring, while in normal situation a tab
  switch takes less than 1 second. When Shiretoko freezes to handle the
  tab switch, top reports that the X.org process takes up 100% CPU. I am
  running X.org (version 2:1.6.0-0ubuntu14) in a dual-head setup with one
  of the monitors rotated by 90° with Xinerama enabled on Nvidia GeForce
  FX 5200. I am using the 173.14.16 Nvidia binary drivers (nvidia-173
  -kernel-source - version 173.14.16-0ubuntu01).
  
  Ubuntu 9.04.
  Package versions:
  firefox 3.5.1+build1+nobinonly-0ubuntu0.9.04.1,
  nvidia-173-kernel-source 173.14.16-0ubuntu01

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Extremely slow tab switching on Launchpad pages
https://bugs.launchpad.net/bugs/408984
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