firefox-3.0: pdf files with "attachment" headers can only be saved

[Loïc Grenié]

Package: firefox-3.0
Version: 3.0+nobinonly-0ubuntu0.8.04.1
Severity: normal

When a sends am "attachment" header the result is that
Firefox only offers to save it and not to open it.

The problem is Ubuntu specific: I've tried to download
firefox-3.0 from mozill.org and it works as expected on
Debian (testing) but not on Ubuntu (Hardy).

-- System Information:
Debian Release: lenny/sid
  APT prefers hardy-updates
  APT policy: (500, 'hardy-updates'), (500, 'hardy-security'), (500, 'hardy-proposed'), (500, 'hardy-backports'), (500, 'hardy')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.24-19-generic (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages firefox-3.0 depends on:
ii  debianutil 2.28.2-0ubuntu1               Miscellaneous utilities specific t
ii  fontconfig 2.5.0-2ubuntu3                generic font configuration library
ii  libatk1.0- 1.22.0-0ubuntu1               The ATK accessibility toolkit
ii  libc6      2.7-10ubuntu3                 GNU C Library: Shared libraries
ii  libcairo2  1.6.0-0ubuntu2                The Cairo 2D vector graphics libra
ii  libgcc1    1:4.2.3-2ubuntu7              GCC support library
ii  libglib2.0 2.16.3-1ubuntu3               The GLib library of C routines
ii  libgtk2.0- 2.12.9-3ubuntu4               The GTK+ graphical user interface 
ii  libnspr4-0 4.7.1+1.9-0ubuntu0.8.04.2     NetScape Portable Runtime Library
ii  libpango1. 1.20.1-1                      Layout and rendering of internatio
ii  libstdc++6 4.2.3-2ubuntu7                The GNU Standard C++ Library v3
ii  psmisc     22.6-1                        Utilities that use the proc filesy
ii  xulrunner- 1.9+nobinonly-0ubuntu0.8.04.1 XUL + XPCOM application runner

Versions of packages firefox-3.0 recommends:
ii  ubufox                      0.5-0ubuntu1 Ubuntu Firefox specific configurat

-- no debconf information