XMLDocument slow performance

[Abra]

Hi

I have a program that works a lot with .NET's XMLDOM. It
creates nodes, appends them to one another (creating a
tree), then imports nodes from other documents into this
main one and appends those, etc.
It seems that when I kept importing nodes into the
same "main document" I had a huge performance problem.
When I started creating a new XMLDocument every time
importing the old document into it the performance was
much much better.
See a related post:
http://groups.google.com/groups?
q=performance+degrade+group:microsoft.public.dotne t.xml&hl=
en&lr=lang_en|lang_iw&ie=UTF-
8&inlang=iw&safe=off&selm=edbb01c213b1%249f07738 0%
243bef2ecf%40TKMSFTNGXA10&rnum=2

Any ideas?
Thanks,

Abra.
PS
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