Dynamic Who's Online Info Broken

[007]

Some products here such as the arcade hack and others have code that displays extra information in Who's Online about a user's actions.

i.e. If a user is on /file.php?action=testing

I can add the following code to online_location_unknown:

$action =& $userinfo['values']['action'];

and then display "$action" in the who's online bit.

I moved my forums to a new server and suddenly this code stopped working.

Has anybody had this happen before? Any ideas what might have stopped this from working?