firefox uses all the screen with no buttons, hides the system menu

[RenoRod]

Binary package hint: firefox-3.0

using ubuntu 8.10 with firefox 3.0.10 (canonical 1.0), firefox always uses all the screen; no top buttons are displayed(-,[], x), firefox hides the ubuntu system menus, and is not possible to use the ubuntu system menus or another application without closing firefox, also the only way to close firefox is by menu (archivo->cerrar pestaña, archivo->salir (spanish)).

By the way: in some previous ubuntu kernels the firefox was working well.

1) .- Ubuntu Release:
Gracias por su interés en Ubuntu 8.10 - la versión Intrepid Ibex - publicado en octubre de 2008.

Description: Ubuntu 8.10
Release: 8.10

Linux xxxx 2.6.27-14-generic #1 SMP Wed Apr 15 18:59:16 UTC 2009 i686 GNU/Linux.

2) .- firefox:
  Instalados: 3.0.10+nobinonly-0ubuntu0.8.10.1
  Candidato: 3.0.10+nobinonly-0ubuntu0.8.10.1
  Tabla de versión:
 *** 3.0.10+nobinonly-0ubuntu0.8.10.1 0
        500 http://mx.archive.ubuntu.com intrepid-updates/main Packages
        500 http://security.ubuntu.com intrepid-security/main Packages
        100 /var/lib/dpkg/status
     3.0.3+nobinonly-0ubuntu2 0
        500 http://mx.archive.ubuntu.com intrepid/main Packages

3) .- I expected to happen: i want to see the three normal buttons to be able to close or minimize the actual firefox window.

4) .- what happend instead: firefox always shows full screen without buttons, and the focus is always on it.

Here is the console errors:
----------------------------------------------------------------
Error: Permiso denegado para llamar el método Location.toString
-----------------------------------------------------------------
Error: uncaught exception: [Exception... "Cannot modify properties of a WrappedNative" nsresult: "0x80570034 (NS_ERROR_XPC_CANT_MODIFY_PROP_ON_WN)" location: "JS frame :: chrome://global/content/bindings/autocomplete.xml :: onxblpopuphiding :: line 834" data: no]
-----------------------------------------------------------------

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
NonfreeKernelModules: ath_hal
Package: firefox-3.0 3.0.10+nobinonly-0ubuntu0.8.10.1
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=es_MX.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox-3.0
Uname: Linux 2.6.27-14-generic i686

[Micah Gersten (micahg)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 99740, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.