For me anyway this is a really strange problem, the phone is pulling some but not all of my Facebook contacts data into the people hub. There's probably about 5% of contacts which should have a corresponding Facebook link but its just not there! The fact that all the other integrated FB features are working, like 'whats new', 'post an update' and 'check ins' just makes it even stranger.
In response to your question e-jirka the Facebook chat function on my 1020 isn't working either (FYI I just tried it on my old 920, which isn't suffering from the 83CF1104 error code, and it isn't working on that either!!). So its missing contact info and FB chat integration failure at the mo.
Anyone else having any other issues? Are some people not seeing any Facebook contact info?