Two things:
From the control panel where it shows subscribed threads, as I read each one, and then would go back, the read thread would drop off... that no longer happens. Secondly, from the "new threads" listings, as I read a thread and would go back, the threads I've read would have their icon change, and become unbold, indicating they've been read. IT helps me to keep track of where I've been and where I haven't and if there's been. new reply in a thread since I was in there last. That's also no longer happening. Everything shows up unread all the time, making it incumbent upon me to remember. I'm an older model with limited memory and limited computing power, so this is very taxing on my part.

-tg