Drop Down menu bar
I always access with the same computer and browser, SO.
The bar with USER CP, Register Files... Search, Quick Links, Chat Room, Log out
Usually some of the options like Quick Links, have a drop down arrow after them and I can drop down and then click Mark as Read"
Other times, no such drop down, I click on the QUICK LINKS button and the menu bar changes, (page reloads) THEN I can choose mark all read.
Major waste of bandwidth the 2nd way.
Home is where I park it!