Info/Instructions: I don't have any pictures for this so you will have to provide them yourself if you don't like the text. If anyone has any appropriate pictures I would glagly add them to the code and update the instructions if they send them to me.
Also, I haven't checked this on 6.3+ yet.
Finally, I've done some small testing on this and from what I could see it doesn't add any more load on the server. The query is very similar to the original, it only grabs all rows instead of just the ones in the current board, but not having to do a string match probably outweighs this. Actually, with only one row in the Online table, it seems my new query is actually faster most of the times. But since the time of the query is less than a millisecond it is probably within the error margin.
Disclaimer: Please backup every file that you intend to modify. If the modification modifies the database, it's a good idea to backup your database before doing so.
Note: If you modify your UBB.Threads code, you may be giving up your right for "official" support from Infopop.If you need official support, you'll need to restore unmodified files.