I'm having a problem that's a real head scratcher. When you enter a search term that is not found it gives the message:
The page isn't redirecting properly
Firefox has detected that the server is redirecting the request for this address in a way that will never complete.
A valid search works correctly. This site was recently upgraded from 1.3.9 and has the CEON URI mapping mod installed and active. PHP 5.3.29 MySQL 5.5.41-cll-lve. A complete list of mods is:
blank sidebox
advanced shipper
ceon uri mapping manager
ckeditor
email archive manager
google analytics
image handler 4.3.2
cowoa 2.4
mydebug backtrace
numinix facebook lke button
product listing sorter
tabbed product pro
thub
timezone fix
ty package tracker

There a no errors being logged and the server logs are not showing anything. Anybody have any suggestions on how to debug this? Here's a link to the site if you want to see the problem http://tinyurl.com/qay5dhe