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Firefox freezes at startup

Posted

My sessionstore.js causes an almost immediate freeze (CPU of one core at 100%, stays there without any usual prompting about unresponsive scripts etc.) when starting firefox. Removing that file helps, but just launching in safe mode doesn't help. Also if I move the sessionstore to a new profile, that profile freezes too. Moving to a different computer (OS X with also 8.01) freezes too. Disabling hardware acceleration doesn't help, neither does enabling restore_on_demand.

The problem started after a crash when I tried to open the panorama view, not sure if the sessionstore is somehow corrupted.

How could I debug/solve the problem? I really don't want to lose my session.

Additional System Details

Application

  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:8.0.1) Gecko/20100101 Firefox/8.0.1

More Information

Application Basics
Name
Firefox
Version
8.0
User Agent
Mozilla/5.0 (Ubuntu; X11; Linux x86_64; rv:8.0) Gecko/20100101 Firefox/8.0
Profile Directory
Open Containing Folder
Enabled Plugins
about:plugins
Build Configuration
about:buildconfig
Crash Reports
about:crashes
Extensions
Name
Version
Enabled
ID
Firebug
1.8.4
true
firebug@software.joehewitt.com
Global Menu Bar integration
2.0.1
true
globalmenu@ubuntu.com
Ubuntu Firefox Modifications
1.0
true
ubufox@ubuntu.com
Modified Preferences
Name
Value
accessibility.typeaheadfind.autostart
false
browser.link.open_newwindow.restriction
0
browser.places.importBookmarksHTML
false
browser.places.importDefaults
false
browser.places.leftPaneFolderId
-1
browser.places.migratePostDataAnnotations
false
browser.places.smartBookmarksVersion
2
browser.places.updateRecentTagsUri
false
browser.startup.homepage_override.buildID
20111115183813
browser.startup.homepage_override.mstone
rv:8.0
extensions.lastAppVersion
8.0
network.cookie.prefsMigrated
true
places.history.expiration.transient_current_max_pages
235122
privacy.sanitize.migrateFx3Prefs
true
Graphics
Adapter Description
X.Org -- Gallium 0.4 on AMD SUMO
Driver Version
2.1 Mesa 7.12-devel (git-c87d1a3 oneiric-oibaf-ppa)
WebGL Renderer
X.Org -- Gallium 0.4 on AMD SUMO -- 2.1 Mesa 7.12-devel (git-c87d1a3 oneiric-oibaf-ppa)
GPU Accelerated Windows
0/1

Question owner

I managed to find a single tab that was causing this by doing a binary search on the restore screen. But interestingly trying to load just that one problematic tab does not cause a problem either...

Would be interesting if I could somehow debug or help to debug the problem, that it's fixed and won't happen again. I have the freezing sessionstore.js saved for that purpose.

Question owner

This problem has happened many times since the first. Every time I can solve it by just removing enough tabs from the restore screen, but it's *really* annoying. Seems like current version chokes on a tab at least twice a week.