[plt-scheme] quote-syntax vs. quote

I've been trying to track down some unbearable slowness in my code,
and I finally isolated it to a quote-syntax expression, which changing
to quote instead results in a 5x speedup.  I'm pretty sure that the
slowdown must be happening somewhere further down the dataflow, but I
thought I'd ask just to be sure: is there some reason why quote-syntax
would be an order of magnitude slower than quote?

--dougo at place.org