I upgraded Firefox to version 1.0PR. The old 9.x version had a security hole I heard. The bad news is that the Tabbrowser preferences extensions has not been updated. The good news is I found a Add bookmark here extension. Now I get one of the nicest UI feature of Opera working in Firefox -- This feature let you navigate, using the bookmark drop down menu, to the place where you want to add the bookmark, and a "add bookmark here" selection is available right there. This is much more intuitive. Try it. You'll see what I mean.