The problem was in the file places.sqlite of my profile. I fixed the problem substituting the file with an other one from a new fresh profile. I don't know where is the corruption inside the file, I attach it if somebody want to analyze it.
Anyway, this substitution fixed the problem. places.sqlite is governing the bookmarks and history since FF3. Thanks all ** Attachment added: "Old corrupted places.sqlite" http://launchpadlibrarian.net/19067646/places.sqlite.old -- unable to see/navigate bookmarks and history on firefox 3 https://bugs.launchpad.net/bugs/278252 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs