I seem to remember when this site first went live the Categories screen was a list.
Then a couple of days ago you unleashed the extra features of some in-built crazy block-view option in the software. It doesn't work. Less is more. Or at least more simplicity and order is more.
Please do change the Categories screen to an ordered list, which basically means the actual forum headings under each other rather than arranged into sectioned blocks.
You can have the extra 'sidebar' info on who's posting to the right, but keep the forum headings all as a vertical list on the left, within sections. We need some clarity.
Here (a confused block, where to go? - my brain is exploding!!) :
DPR (looks ok though has always been too narrow) :
DPRenewed at myBB (looks ok) :
DPR Clone (looks ok)
So mainly, organise forums as a vertical list (with other stats stuff you want to include over on the right). Keep it compact though, to reduce the need for too much scrolling up and down. Less is more, loose the complex block.