For the past couple of days, this hasn't been working properly. When I use the "Mark all posts read" button, it works for a few minutes, but after a while (1/2 hour - 1 hour? I haven't timed it) three or four pages' worth of posts reappear.

I'm running the latest version of Firefox (43.0.3) on Windows 7 Professional, if that's any help.

I will pass it on Tysillio. I have the same issues sometimes. Hugs
Mariah

Thanks, Mariah!