I seriously doubt opptimizer has anything to do with facebook playing up, especially with the sociality page saying that it's a pre release version that you installed, I wonder where the bugs are more likely to have come from..... you're on a witch hunt asking facebook questions in this thread, you already linked probably the best thread to look and ask questions about that, also search and if they cant answer there, well try to give them time to answer first then new relevant thread.
Edit: in fact this should probably be a bug report in the sociality thread.