There seems to have been a change in the way the Cat deals with the back button- Firefox 2.0.0.20- it used to be one click back to the front page plus one per click on a link in the thread before. Now it usually (but not always) takes two clicks back from the thread plus one per link. Which means I sometimes (but not always) click back too far. Where's the extra click crept in, and why isn't it always there?