read-from-string output difference between MacCL and Lispworks implementations of cl-http

This is a follow-up to my posting from a couple hours ago:

Read-from-string gives different results when called within cl-http 
70.214 methods, depending on whether it is run in lispworks 4.3 vs 
mac common lisp 5.1.

The test method:

(defmethod rtest ((url url:http-computed-url) stream)
   (http:with-successful-response (stream :html)
     (format stream "package = ~a" (package-name (symbol-package 
(read-from-string "test"))))))

(http:export-url #u"/pql/rtest"
                  :computed
                  :response-function #'rtest)

The results:

lispworks: HTTP-USER
mac cl: COMMON-LISP-USER

Is this a known bug, or "feature", of the lispworks vs mac cl cl-http 
implementations? Is there a simple way to make read-from-string in 
the LispWorks version produce the same results as read-from-string in 
the MacCL version? My code uses read-from-string within cl-http 
methods a lot, and fixing each use one at a time would be pretty 
time-consuming.

      Thanks,

	Mark

-- 
Mark Klein
Principal Research Scientist
Massachusetts Institute of Technology
77 Massachusetts Avenue, NE20-336
Cambridge MA 02139 USA
[email protected]
http://cci.mit.edu/klein/

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