Thread my link is referred to was made during the age of 1.3.2.
Are you sure you were able to see your own server in a client's list running on same machine as server itself before last update?
Because thread I mentioned isn't the only time when server owner complained about impossibility seeing his server in the list.
If you're sure, maybe you've changed some config vars in the same time you've updated your server?
Anyway, that's something new for me to hear. I got used that servers didn't appear in a lists of their owners, and I thought that was made by design...