It could be a server-backed feature, however, just at the current time, it is not.
Hmm~ that's too bad. For more active forums, it is crucial for users to be able to see which threads they read and which ones they didn't, keeping up with activity just doesn't scale otherwise. Can you say more about the status of this feature? Has it never been considered? Or just postponed to later, or is it EWONTFIX even? This is a showstopper level missing feature for me. =\
@Bentael Did you ever find a fix for that segfault issue you mentioned?