Im having the trouble also,
I triple checked that the ports are open, I tried setting up apllication port forwarding and persistant port forwarding, both ways produce the symptoms, one day all is good, one day no good. I just set my webpst to
http://www.thzclan.com/ts2/webpost.php
to see if it was a prob on my website, but its not, it seams to be something else.
Any ideas ?
Maybe has to do with TS server ?
any way, I may wind up uninstalling the server and reinstalling it.
Hate to make everyone re-register though....
Ghboom