On Sunday or Monday, I shared a "What is happening in Turkey" post, in English, from a Turkish friend's wall to my own. It was shared to "Friends except acquaintances" and got a few likes and comments. This morning I noticed it was gone from my wall. It is not to be found in my activity log, and the notifications of that it had been commented on were also gone.
I was starting to doubt I had posted it at all, when I remembered to check Google Reader (Yep, still running), as I ages ago had set up a RSS feed with my notifications there. There it was, "[Friend's name] likes your link", with a clickable link to facebook.com/my name/posts/ followed by a numerical value. However clicking on it gave this message: "This content is currently unavailable. The page you requested cannot be displayed right now. It may be temporarily unavailable, the link you clicked on may have expired, or you may not have permission to view this page". Other posts in my RSS feed works fine, so it was just this particular one.
If it wasn't for the RSS feed, I probably would have shrugged it off and thought no more of it, so I guess the RSS feature will be gone soon too.