I'm posting this as an FYI in case someone else has the same issue.
For the last month or so, when I would click on some threads, I would get bumped completely off the site as if I had hit the "X" in the upper right corner. I asked about this here and other places and no one had an answer.
Well, it turns out one of my anti-crap programs, System Mechanic, has an overly-aggressive pop-up blocker. Once I disabled it, the problem went away.
Again, just an FYI....
