My you tube BB Code has stopped working in 3.6.4 in firefox browser 1.5.0.8
It mall formats the actual link. You can see an axample at the beginning of an existing post at
http://www.physiobob.com/forum/showthread.php?t=3510
The first word was a link working perfectly until a recent upgrade. This might be a firefox issue or it might be a vbulletin issue. This is because I also have now seen that my plugin which does the same thing for adding utube plugins is also asking to install a plug to make it work!
I attach a screen shot of that as well for you interest in case it help to work out where the issue might be coming from.