[plt-scheme] servlets very slow in CVS

I'm playing with the servlet examples, and they seem bizarrely slow.
Are there any known problems that might account for this?  If not,
I'll investigate further.
-- 
"I said, `Shut up!' " Ms. Glass recalled ... " `You do not!
Oh my God! Oh my God! Oh my God!' So I went to Nina, my boss, and
said, `Oh my God! Oh my God! Oh my God!' "

        --- Julie Salamon, in the New York Times