I assume you're browsing at around 800x600? That's around when it becomes noticable.
The topic title "PayTV: Weihnachtszeit - Abonnentenzeit" in the Premiere News forum is causing that column to be wider than normal. The title splitting code won't cut a word in half.
This is the designed behavior, and has been previously explained
in an earlier topic of yours. <img src="https://www.ubbcentral.com/boards/images/graemlins/smile.gif" alt="" />