Apr 25, 2013

Firefox hanging every few seconds while scrolling through a web page

One of the most annoying glitches I've ever seen in an application: Firefox begins to hang/freeze for a few seconds, every 10 seconds or so until browsing a long web page becomes unbearable.

Turns out this is caused by some flaky internal Javascript code in Firefox, used in the routine that stores your session information so that Fox can restore the session in case it crashes.

Ironic if you ask me, especially as that's one of the most useless features in the browser. So I just disabled it:

Type in "about: config" in the address bar, locate the "browser.sessionrestore.resume_from_crash" line, and double-click it to change to false.

Source

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