key/keyref bug in .Net fixed?

There was a bug ("issue") in the XSLT transformation engine included in the
1.0 .Net Framework such that using key/keyref slowed your transorms to a
crawl rather than speeding things up.  There was a subsequent "hotpatch"
that improved the situation a bit -- so that using key/keyref didn't hurt,
but it still didn't help much. Using the old MSXML4 on the other hand
produced dramatic speedups using key/keyref.

Does anyone know whether this problem has been properly fixed either as a
patch or perhaps as part of the 1.1 Framework release?

Thanks,
 Bill


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