Some info that may, or may not be pertinent:
My 27 newest friends are on my profile page (pics), but not in my friends list. The problem seems to have started on Wednesday, 10/20/2010. None of my friends made after 10/19/2010 are shown in the Friends List.
I currently have a total of 282 friends, but my "View All" page shows that I have 289 because of "doubles". I don't know how these happened, but I haven't deleted the duplicates for fear of losing the originals, as well.
When I signed-in about 1/2hr ago, oddly, my friends list showed "0" friends and no names were listed. After refreshing the page, all but my last 27 were then shown. 15 of the 282(assuming all 282 are listed) are currently either Available or Busy.
I've never heard about any "limits" as to how many friends one could have displayed in their friends list.
Thanks Icon, for looking into this when you get a chance. :)
PugsAce