I'll try to get that fixed today. What you and Susie are describing are both two symptoms of the same problem. Well, the same symptoms, but presented differently.
Not sure if this started when the old post_info had had enough because of the traffic, or the initial teething problems for the new post_info.
Has nothing to do with session state or cookies.
For each board you've got marked as a Favorite, a separate table is storing the number of the last message you read. The way the Favorites page works is simply to take the number of posts a board currently thinks it has (stored in the board table -- not counted each time from the message table) and subtract from it the number of the last message you read (as stored in that separate table for Favorites).
Susie has shown (and I saw) where some boards have an inaccurate total post count. Because at some point, post_info was broken in a way that a post would be submitted, but the counter in the board table wouldn't be incremented. Was broken that way for a span of about 30 seconds, but it was enough to throw the number out of synch.
And I think there was also at least once that the board counter was being incremented without the post actually going in.
So we've got the problem both ways. The board counter can be too low (what Susie and others have pointed out) or it can be too high, meaning the number of the last post you read can never reach what the system thinks the number of posts actually is.
Churak version: It's broke. I'll fix it today.
