I haven't seen it on the windows version (XP or Vista), or the Mac version.
My linux boxes are either cli-based or used for offline use, so I don't have
much input there.

What extensions are you using?  What about your Flash/Java/etc versions?  It
sounds like it's across sites, but have you noticed a certain site that
"sets it off"?  How much RAM is FF using?


On Tue, Nov 10, 2009 at 9:01 PM, James <[email protected]> wrote:

>
> I'm using FF 3.5 on Mandriva 2009.1, but I suspect that the specific
> versions and OS don't make too much difference.
>
> It seems that quite often, such as about once per day, Firefox goes
> into "spin" mode where it just eats up as much CPU as it can get.  On
> a dual-processor machine, that means that "top" often shows firefox
> using 150% CPU. Of course the whole machine drags when there's such a
> CPU hog.
>
> I've tried kill off the FF tabs one by one to see if any of the loaded
> web pages were the culprit. Nope, even if I kill off all the tabs,
> firefox still spins and eats the CPU.
>
> Has anyone else noticed this unfortunate behaviour?  It's not new with
> 3.5; I know it also happened with 3.1. But if it happens so often, why
> hasn't Mozilla see it (and fixed it?)  Otherwise, it's a great
> browser.
>
> Jim
>
> >
>

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