+First make sure your Mozilla distribution contains the Negotiateauth component
+(libnegotiateauth.so on Unix, negotiateauth.dll on Windows). Generally this is
+included in versions 1.7beta and later on Unix platforms including Mac OSX,
+maybe 1.8 and later on Windows.)
+
+Next, you have to specify URL's for which it is allowed to use the Negotiate
+authentication method. It's done by setting the
+network.negotiate-auth.trusted-uris preference. In order to set it, just type
+"about:config" in the URL bar and then set the value of
+"network.negotiate-auth.trusted-uris" to "https://secured.webserver.name".
+
+If you want to find out what happens in the Negotiateauth component use
+following environment variables:
+ NSPR_LOG_MODULES=negotiateauth:5
+ NSPR_LOG_FILE=/tmp/negotiateauth.log
+before starting Mozilla. You will see debugging messages logged in the file
+specified by NSPR_LOG_FILE (/tmp/negotiateauth.log)
+
+KDE Konqueror
+-------------
+http://www.grolmsnet.de/kerbtut/konqueror.html