Some contact pictures from Facebook are never updating, while others are working fine. The "google" part of the account have no picture set, the one showing is an old Facebook picture.
This problem appears both in the contacts, and in the Facebook application itself when you look at the contact list. Visiting the contact's personal page shows the correct picture, though. The Messenger application for the Facebook messages is showing the correct pictures.
I've tried to clear the cache (not the "data") of the Facebook application, to no avail.
Vanilla Android 2.3.6 on an unrooted Nexus One.