Facebook – What format for animated slideshow to post on Facebook

Facebook's feed pulling system, to be frank, sucks. It's gotten slower and slower for no apparent reason, though I assume that the upsurge in users has resulted in large increases in server load. That's the only reason I can think of.

No, it is not possible to view this deleted post. Even if you have it in your cache, it would have already been overridden the next time you visit the same page (and you did, since you saw the message about the post being deleted).

There might be some luck if Facebook emails you regarding posts by your friends, as they may contain the message within the email so that you can see it even if it is removed from Facebook itself.