firefox changed appearence and settings without my request and I cannot restore the previous ones

[abelito8]

Binary package hint: firefox-3.0

 I have firefox 3 in an Ubuntu 8.10 operating system. I have downoladed a number of add-ons and everything was fine until yesterday when firefox settings changed. In particular

the address bar shows only the generic address of the website I am visiting (i.e. wherever I navigate in mozilla.com it shows only mozilla.com with no specifications like /forum or other) this makes also impossible to press the back button or reload; before that when typing an address, firefox detected it from the history of the bookmarks, which is not the case anymore

In addition, when I open a new tab with the ctrl+t command, the new tab shows the address of the latest one

Now, I have disabled almost all add-ons, removed and reinstalled firefox and the problem remains...
Anyone who could help?

Thank you
Abel

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
NonfreeKernelModules: ath_hal
Package: firefox-3.0 3.0.9+nobinonly-0ubuntu0.8.10.1
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox-3.0
Uname: Linux 2.6.27-11-generic i686