[Lucid] Firefox 3.6.12 CPU up to 100 percent

[Sam_]

Binary package hint: firefox

Since latest updates. Before the updates nothing was lagging. Config wasn't changed in any way.
Open FF.
Open bookmark manager, search for any long keyword e.g. linux-community.
While starting the typing linux-c, the typing itself is lagging.
While FF searches the keyword window turns dark and CPU of firefox-bin goes nearly 100 percent, mostly 94 to 96.
I watch it in conky.
Reproducable. (Also with new profile)
btw. same when opening only http://www.ubuntu.com/usn, window gets dark.
No issue on other single pages, having open 20 tabs or flash (e.g. youtube).

Attach strace and Synaptic history.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: firefox 3.6.12+build1+nobinonly-0ubuntu0.10.04.1
ProcVersionSignature: Ubuntu 2.6.32-25.45-generic 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-generic x86_64
Architecture: amd64
CheckboxSubmission: 70e14b5afb9614c469fa67a7fca95226
CheckboxSystem: daed2f3d6643b4a84b4520a2427f8c2b
Date: Thu Oct 28 23:59:25 2010
FirefoxPackages:
 firefox 3.6.12+build1+nobinonly-0ubuntu0.10.04.1
 firefox-gnome-support 3.6.12+build1+nobinonly-0ubuntu0.10.04.1
 firefox-branding 3.6.12+build1+nobinonly-0ubuntu0.10.04.1
 abroswer N/A
 abrowser-branding N/A
ProcEnviron:
 LANG=C
 SHELL=/bin/bash
SourcePackage: firefox

[dino99 (9d9)]

closed version