We have pages that process non-ASCII characters in request parameter values 
just fine with Tomcat 4.1.24 by encoding the URL request string (this is a GET 
request) and then using ServletRequest.setCharacterEncoding("UTF-8") when 
processing the resulting request.

This is failing in Tomcat 5.0.16 -- all else being held equal.

I've checked the bug database and see various issues with setCharacterEncoding
() and interactions with request dump valves, Jasper log-levels, etc.  I 
checked each one of these in my Tomcat 5 configuration and none of these are 
set.

I have been poking around in the debugger and can't seem to find anything amiss 
(e.g. tell-tale use of parseRequestParameters() prior to use of 
setCharacterEncoding()), but I'm coming up empty thus far...