While most URLs in these forum posts do function as clickable links, some do not.

This is an attempt to figure out why?  I'm guessing that if I compose an entire post using Notepad, and then copy/paste the whole thing into a "Write a New Post" window's Message text editor, it will fail to recognize the URL and make it linkable.

I have composed this post in that manner.  If by the time you read this, the following URL isn't linked, then my theory is correct.

http://forums.infragistics.com/forums/p/10879/43611.aspx#43611

And if the above URL is click-able, then it's your turn to try and figure it out.  For an example of an un-click-able link, open the above URL.