Here is the error I was getting:
Portlet X responded with content-type text/plain when the client was requesting content-type text/html
.... some garbled stuff here ....
ate: Mon, 24 Apr 2006 20:12:18 GMT
Server: Oracle-Application-Server-10g/10.1.2.0.2 Oracle-HTTP-Server
There seems to be something in the <fmt:formatdate> tag that caused this. We are using jakarta standar.jar version 1.0. I don't have time to reasearch this right now, instead I made this a scriptlet that uses SimpleDateFormat. (Yes, I feel that this workaround is a cop-out, but that's the way it has to be.