[mod_python] mod_python servlet failing on non-existent code

Hi all,

I'm hacking my way through a proof-of-concept with mod_python servlets, 
and I'm coming across something strange.  When I hit my page, I'm 
getting an error message returned in a browser ("unpack tuple of wrong 
size").   The strange part is that the line listed in the browser 
doesn't exist in my code anymore.  (I changed that line as part of the 
debugging process.)

So I figured that maybe I was having a problem with mod_python caching 
classes, and I restarted apache just as "httpd -X".  I hit the page 
again, and the same error message shows up in the browser, but the HTML 
that I want shows up in the window where I started httpd.

Can anyone point me in the right direction?

-Chris