Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox freezes at startup

  • 2 replies
  • 9 have this problem
  • 8 views
  • Last reply by tpievila

more options

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.

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.

All Replies (2)

more options

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.

more options

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.