Used to be when I went from the Recent Posts to a specific thread, I could just hit the 'Back' button on my browser once and I'd get back to the Recent Posts page. Now I have to hit the back buttone 3 times to do that. It is cycling through some sort of google ad that I never had to deal with before.
I actually do have problems on some sites like this at work, sometimes causing me to have to click back a large number of times. Here it is because of the filtering software in place, I am not sure exactly how it causes the issues but I do know that is the reason.
Not that you'll find this news particularly helpful, other than to maybe help isolate the problem as local to your computer/internet server, but things are working normally here (i.e. one click to get back). Good luck solving the problem.