I added a Lifestreaming plugin to my blog recently and as I was entering the feed urls of the various Web 2.0 sites I am participating, I stumbled upon the Facebook problem.
Since its last change, the old mini-feed feed has disappeared, so one has to reassemble it by its components.
I was particularly interested in the Noted Feed, the Links feed and the Status feed.

Why?

Well, the notes is the facebook blogging.

Notes
Although I rarely use it, it can occassionaly contain some thoughts that are posted nowhere else.

The structure of the url is as follows:
http://www.facebook.com/feeds/notes.php?id=<yourid>&viewer=<yourid>&key=<yourkey>&format=rss20

Links

The Links feed is essentialy the feed of all the sharing activity in facebook, so it is a must to include in a lifestream. Working as with notes we can find it at a similar place.
The structure of the url is as follows:
http://apps.facebook.com/feeds/share_posts.php?id=<yourid>&viewer=<yourid>&key=<yourkey>&format=rss20

Status
Last, the Status feed is the most important one, especially if no cross posting is taking place on your Facebook Wall, as it comprises of all the original thoughts and situations you share in Facebook.
But where is this feed located?
As much I have searched I could not find it.

So after discussing this in twitter, from the responses I realized that the structure of the statuses feed url must be the same with other two feed.

First guess: replace notes.php with status.php and ... voila, it works!
http://www.facebook.com/feeds/status.php?id=<yourid>&viewer=<yourid>&key=<yourkey>&format=rss20