I just spent WEEKS troubleshooting the crap out of this problem, and could not solve it. I was tracing stacks on Firefox.exe threads in Process Explorer, debugging memory dumps in WinDbg, running safe mode, trying processor optimized builds, reverting to FF 3.5.0, reverting to FF 3.0.13, swapping out my Sessionstore.js, etc.
Finally! A SOLUTION to the Firefox Freezing/Hanging every 10 seconds!
Firefox version: 3.5.2 Operating system: Windows NT 5.0http://www.reddit.com/r/todayilearned/comments/9by73/til_firefox_backs_up_your_tabs_every_10_seconds/
This single issue is the largest Firefox performance disaster I've ever seen!
Here's a guy who bought a new PC JUST because of this issue (he thought his PC was the problem.) http://lifehacker.com/5342636/how-to-fix-annoying-youtube-jumpiness-in-firefox
I just spent WEEKS troubleshooting the crap out of this problem, and could not solve it. I was tracing stacks on Firefox.exe threads in Process Explorer, debugging memory dumps in WinDbg, running safe mode, trying processor optimized builds, reverting to FF 3.5.0, reverting to FF 3.0.13, swapping out my Sessionstore.js, etc.
This post by a Mozilla developer sheds some light on the technicalities causing this: http://shawnwilsher.com/archives/294/
Extensions installed:
Firebug, Google Gears, TabKit, YSlow
Plugins installed:
[+]