Why did the Forum Highlights get moved so far down the page? It used to be right under 'Subscribe' (IIRC). For a while I could not find it, but this is just me.

Maybe it is just my browser - right now the forum highlights shows up about 2 linefeeds below the bottom edge of post 1

Must be your browser -- it looks normal to me.

The forum highlights was moved from right above the wide skyscraper ad in the sidebar to right below it. AD, you have ad blocking turned on.

I have ad blocking turned on but the space for the ad is still there. That explains it, thanks.

There might be an iframe that you can block, effectively removing the whitespace. I can't remember exactly though, as I've disabled ads through my control panel (sorry, moderators and sponsors only :p).