Binabik: No, you don't have to, Firefox does this all on itself. And perhaps I didn't express myself clear enough: For both Firefox versions 1.5 and 2.0 there is an update available which should fix your problem. For Firefox 2.0 it's 2.0.0.2. So check your version number ("Help"->"about Firefox"). If it starts with 2.0 but is not 2.0.0.2, an update might solve the disappearing bookmarks. Something caused that in particular situations the profiles were created with a write protection, so that firefox couldn't store the bookmarks permanently. This should be gone with 2.0.0.2/1.5.0.10. If it still doesn't store them, you could manually check if the profile folder is write protected..
(sakla) If you don't want other users to know what you are doing you can change into cloak mode in Settings (paying members only). (pauloaguia) (Bütün ipuçlarını göster)