...it's gone! Or at least I can't find it. I hate leaving bolded topics behind, but I don't really care about the whole Linux/Ubuntu/Leopard bug spree. Can has button back plox? Thank you!
The mark forum box is still there. You have to go at least one level down from the main page and the check mark box should be to the left of the title. Once that is selected a popup will show up and you can then select all the other threads. Let me know if this does not show up for you and what OS/Browser combination you are using.
I don't have check boxes either, but if you look at the top left of your image, you can click the mark forums read button. It will let you either mark the current forum read, or all forums read. I didn't notice it at first either.
Sorry it looks like that is a moderator only checkbox. I'll see what I can do for finding a solution for our awesome normal users. EDIT: Yea it looks like the best method for normal users is to use the Mark Forum Read link on the top bar which can be located right below the Home and Forum links.