'As-Read' status not working?

[Fifthfiend]

So there was this in the I-hate-such-and-such thread:

Originally Posted by DJ Starchild

I hate when threads I've posted in stop apearing in bold when I'm on the forums, so I think that no one's posted anythign enw in there, and then I discover that indeed, several people have posted in it, and the thread's already closed.

I've actually been noticing the same thing, lately. Along with the opposite, of threads showing up bolded long after I've read them and without anything new in them.

Any of the admins know what's up with this? Anyone else noticed it happening?