There was some cause for alarm as the "Who's Online" box information did not match the extra information listed at the bottom of ubbthreads.php and this was taken to be an error.
It's not an error though. The information at the bottom includes users that are invisible so the number may be greater than the online box. I have attached an updated "Who's Online" box to include the invisible users.
This version seems to be working. I tested it on my main site's 5.4.6 threads version and it worked fine. (I did write it for 6.0 though)
Let me know what you think. I still don't know if I like the way it lays out but after a number of different attempts I stuck with this one.
