Up to version 22.0 I was able to prevent a blank tab from showing when I start FF (blank page), since I upgraded 23.0.1 I now cannot do this. If this cannot be done any longer then where can I obtain a copy of 22.0. its either that or switch to Chrome, too many things that were not broken have been fixed, like the private browsing. I now regret the upgrade so much I will change if there is no solution. I used to download and keep each version but got fed up with it due to the rapid changes and now regret not doing so.