There is a problem with the protocol Adium used to implement the Facebook Chat, which means that some people have problems seeing their contact (they are not there…).
As of Adium 1.4.2 this will be fixed as Adium is moving to the new protocol – or they say they are.
As per this wiki page do:
- in preferences, remove the facebook “account”.
- add a “Jabber” account (as opposed to a Facebook account).
- type in your Facebook username, followed by @chat.facebook.com, for examples “JoeBob@chat.facebook.com”. You’ll need to activate your username in the account preferences (Account ? Account Settings ? Username) of your Facebook account, using the website. (I did not have to do this)
- set the connection server to “chat.facebook.com”, on the options pane.
And you should see all your Facebook contacts in Adium again.