I had quite a bit of problems regarding Flash in Opera the last months and I eventually got fed up with it. So I (re-)tried other browsers, specifically Firefox and Chrome. I couldn't get some of the functionality that I got used to through Opera into Firefox via extensions, so I ended up with Chrome for now, which I am actually pretty happy with. Chrome is fast, has a minimalistic interface and has some great extensions. Among these the recently discussed "NotScripts"-extension, which apparently was discontinued on the Opera platform but not on Chrome. Other great extensions include "Go to IMDb" and "Speed Dial 2", the latter mimicing the Speed Dial in Opera, but better. The only things not so good about it in my opinion are the missing tab-groups functionality and the not comfortably toggleable bookmarks toolbar. But I can live with those issues for now.