OK, I'm probably just being a weirdo, but I can't figure this out. At home on my iMac 8.6 OS (yeah, I know, a "classic), there is a box in each Mousepad forum (underneath the "display options" box and above the graphics explaining what the different thread display icons mean) that allows me to mark just that single forum read. Here, at work, where I'm on a Dell running Windows 2000 it's just not there. I have to either mark all forums read, or none of them.

Am I insane?

The option is located under the "Thread Tools" menu at the top right.

Edit. Wait, I see it. Outside of the thread in the actual forum, under forum option. Thanks steph!!