Hi all,

First, I would like to congratulate you for your work on Matplotlib. I 
am using Matplotlib widgets in all my current projects, embedded in PyQt 
graphical user interfaces.

As you may know, PyQt 4.4.2 has been released a few days ago.
And I found out a performance bug when embedding a Matplotlib 0.91.2 
canvas in a PyQt 4.4.2 object: the pan/zoom feature is very slow (with 
PyQt 4.3.3, and the exact same scripts, pan/zoom is real-time).

I am posting this in PyQt mailing-list too, but I guess that you could 
have more ideas on that matter (Matplotlib widgets may not be used very 
often in PyQt).

Thanks for your help!
Regards,
Pierre Raybaut

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