Although it is beta, I hoped I would have all the things I had in firefox2. It is a disaster that 'tab mix plus' add on, do not run on ff3. I see here https://addons.mozilla.org/en-US/firefox/addon/1122 and I am not allowed to download and install it: "This add-on is for older versions of Firefox" I remember, some months ago I could see the versions of firefox each addon supported. Each plugin web page had this detail. But I cannot see it anymore. I read a comment from somebody (see the web page above) that "Excellent tab manager that works with the latest Firefox betas (tested with FF3 B5)". But this does not happen to me! Why? Is it a bug in mac version of firefox? Windows users can use tab mix plus with ff3 beta? I need multiple rows for tabs, I need tab mix plus for this. Another thing I want to mention is that I am not having spelling and grammar support. I have ff3 english version but I do not have spelling-grammar of english. Everything I write (even now on this subject) is underlined as 'wrong'! I suspect that in version3, the cocoaspell takes over this task? Because I do not have english language to be checked in cocoaspell. I hope you tell me something about tab mix plus and spelling/grammar.