If you're able to try this with the 1.0.x SVN branch or the SVN trunk 
(plus my text patch) let me know.  I am not able to reproduce any sort 
of memory leak with these newer versions, but I am able to with 1.0.0 as 
released (with or without my text patch).  This is with or without the x 
axis limits updating you suggested.  I believe there have been other 
memory leak fixes since the 1.0.0 release.

Cheers,
Mike

On 12/13/2010 08:35 PM, Russell E. Owen wrote:
> I also wanted to say:
> - Thank you for the patch. I appreciate the chance to try a fix.
> - I doubt the issue is related to text because my scripts shows a memory
> leak even if the displayed text is never updated (comment out the line
> that modifies the x axis limits to see what I mean; though I confess I
> did not try that with the trunk matplotlib, only with 1.0.0).
>
> -- Russell
>
> In article<4d028bc7.1000...@stsci.edu>,
>   Michael Droettboom<md...@stsci.edu>
>   wrote:
>
>    
>> I think I'm on to something -- it seems that text layout information has
>> a cyclical reference that prevents the Text object from being freed.
>>
>> Can you apply the attached patch and let me know if it solves your issue?
>>      
> ...
>
>
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-- 
Michael Droettboom
Science Software Branch
Space Telescope Science Institute
Baltimore, Maryland, USA


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