UBB.threads PHP Forum Software Community Forums UBB.threads 6 Version 6 Support who's online strange output

Ok, I've kind of narrowed it down a little. If anyone can help me on this would be great.

I've compared the db table to that which shows in the who's online page. Apparently, if someone is viewing a thread, and the "O_What" in the table is empty, then the whos online will not give a URL, it will just print what is in the "O_Extra" field and not convert to the URL.

So now that I've figured out why online is displaying like that, can someone point me as to why only some of the fields in the "O_What" field are empty, while others are not. At what point is the w3t_online populated?

Any help in this matter would be greatly appreciated.

Thanks.

Mark