I'm using 3.5.3 on Gentoo, and haven't seen any problems (under light use,
anyway).  A thought, though, you could kill -9 the process, and firefox may
launch the 'I quit unexpectedly' dialog and offer to give you a dump
report.  Might be a good idea to file a bug - worst case, they close the
bug. Best case one of the developers looks into it for you.

On Wed, Nov 11, 2009 at 2:07 AM, Andy Linde <[email protected]> wrote:

> 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
>>
>>
>>
>
> >
>


-- 

          Daniel

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