Firefox process rises to 100% CPU usage sometimes when switching from one tab to another even if the pages loadings are finished. But this is not happening at any tab switching.
I tried disabling any extensions and plugins (so Flash is not in cause this time), but the same overload happens.
After a few minutes (2 or 3 max), the process CPU load comes back to normal... until next time.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: firefox 6.0.2+build2+nobinonly-0ubuntu0.11.04.1
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic x86_64
Architecture: amd64
Date: Fri Sep 9 14:55:16 2011
FirefoxPackages:
firefox 6.0.2+build2+nobinonly-0ubuntu0.11.04.1
flashplugin-installer 10.3.183.7ubuntu0.11.04.1
adobe-flashplugin N/A
icedtea-plugin 1.1.1-0ubuntu1~11.04.1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcEnviron:
LANGUAGE=fr_FR:en
PATH=(custom, user)
LANG=fr_FR.UTF-8
SHELL=/bin/bash
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
More tests showed me that this is not when switching tab that the problem happens but when trying to use the History menu commands.
I tried launching FX in safe mode, no tabs open except the main one with Google search page, and as I click on the history menu, FX starts to use 100% CPU for about 1 minute.
So I emptied my history and all works nice.
I used firefox sync to retrieve all my history, prefs and passwords from home to this new PC. I never had this problem even on my EEEPC. here it's a Dell optiplex 360 with 4Go RAM and 2 cores CPU, I should not freeze if an EEEPC doesn't...
Any perfs issue between ubuntu and FX ?