Are these portable URLs still working for anyone? I had been using my Ding v1.00 URL for a long time.. I still get the XML response; but when visiting the activationUrl, all I see is an error of some sort from SWA's website.

Either this one:
We are currently unable to complete your request due to an undefined error. If this is the first time you have seen this message, please go back and try again. If you continue to have difficulties, please contact a Southwest Airlines Customer Representative for assistance at 1-800-I-FLY-SWA (1-800-435-9792).
Reference code: SW900000-AK5G-pFnfuV8DQNiz4rBHjhoR8g Occurred on: 05/07/2011 13:27:05

or a Session Timeout one..