copyNodeList eats all memory...

Hi,

I made a small Python program to duplicate specific branches
and put the copies somewhere in the tree.  For that I'm
using
copyNodeList, something like:

    for curnode in somenodelist:
	newnode = curnode.copyNodeList()
	othernode.addNextSibling(newnode)

This works fine for a 1 MB XML document and the output seems
to
be what I want, but with a 7 MB document it slows done
pretty fast
and finally eats all memory, even on a 2 GB memory system!

Am I doing something wrong?  What is the recommended way of
doing
a recursive copy of branches using libxml2?

Thanks,

--
--    Jos Vos <josxos.nl>
--    X/OS Experts in Open Systems BV   |   Phone: +31 20
6938364
--    Amsterdam, The Netherlands        |     Fax: +31 20
6948204
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