Why is performance is slow when 2010 Cassini serves static files?

Question

When running a site in debug mode on 2010 I get incredible slow performance when cassini serves static files.  According to Firebug it takes about 1 seconds for each request to resolve on 20 2kb images. 

I haven't changed any settings, just have done a straight up install followed by converting a couple of projects.   Rebooted the computer, reloaded IIS without solving anything.

I did have a different problem which I asked about on stackoverflow.com:
http://stackoverflow.com/questions/1656487/exception-when-vs-2010-cassini-serves-static-files

Are my problems related?

Any ideas on what could be wrong or should I try a reinstall?

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Oops, posted in the wrong forum.  Can somebody move this to the right place?