Firefox freezes at startup
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.
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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.
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.