Woody,
Here is a Screenshot of what's happening when I first get on the lab forum here. I get to the recent posts page and when I go to click on a thread, I get a black screen with a circle spinning and a close ad at the top right with an X. This happens all the time when I first get on the forum. Also Screen then jumps to the forum homepage after I click the X for the ad. I'm using Mozilla Firefox.
https://img.photobucket.com/albums/v2...psafee60e0.jpg