package firefox 3.5.9 nobinonly-0ubuntu0.9.10.1 failed to install/upgrade: trying to overwrite '/usr/share/bug/firefox/presubj', which is also in package firefox-2 0:2.0.0.21~tb.21.308 nobinonly-0ubuntu0.8.04.1

I experienced the same issue and did:

$ sudo aptitude remove firefox

$ sudo aptitude install firefox

Upon the install command I was presented with:

The following actions will resolve these dependencies:

Upgrade the following packages:
firefox-3.0 [3.5.9+nobinonly-0ubuntu0.9.10.1 (now) -> 3.6.7+build2+nobinonly-0ubuntu0.9.10.1 (karmic-security,
karmic-updates)]
firefox-3.5 [3.5.9+nobinonly-0ubuntu0.9.10.1 (now) -> 3.6.7+build2+nobinonly-0ubuntu0.9.10.1 (karmic-security,
karmic-updates)]
firefox-3.5-branding [3.5.9+nobinonly-0ubuntu0.9.10.1 (now) -> 3.6.7+build2+nobinonly-0ubuntu0.9.10.1
(karmic-security, karmic-updates)]
firefox-3.5-gnome-support [3.5.9+nobinonly-0ubuntu0.9.10.1 (now) -> 3.6.7+build2+nobinonly-0ubuntu0.9.10.1
(karmic-security, karmic-updates)]

Score is 150

Accept this solution? [Y/n/q/?]

and I accepted the proposed solution.

When I ran the remove script I got this:

The following packages are BROKEN:
  abrowser firefox-3.0
0 packages upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
Need to get 0B of archives. After unpacking 0B will be used.
The following packages have unmet dependencies:
  firefox-3.0: Depends: firefox but it is not installable
  abrowser: Depends: firefox but it is not installable
            Depends: abrowser-branding but it is not installable
The following actions will resolve these dependencies:

Install the following packages:
firefox [3.6.7+build2+nobinonly-0ubuntu0.9.10.1 (karmic-updates,
karmic-security)]
firefox-branding [3.6.7+build2+nobinonly-0ubuntu0.9.10.1 (karmic-updates,
karmic-security)]

Score is 32

I went ahead with the removal and went with the install of firefox 3.5 and
got this once it was all finished:

Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
Writing extended state information... Done
The following NEW packages will be installed:
  firefox
The following partially installed packages will be configured:
  abrowser abrowser-branding
0 packages upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
Need to get 0B/11.2MB of archives. After unpacking 30.2MB will be used.
Writing extended state information... Done
(Reading database ... 268716 files and directories currently installed.)
Unpacking firefox (from
.../firefox_3.6.7+build2+nobinonly-0ubuntu0.9.10.1_i386.deb) ...
dpkg: error processing
/var/cache/apt/archives/firefox_3.6.7+build2+nobinonly-0ubuntu0.9.10.1_i386.deb
(--unpack):
 trying to overwrite '/usr/share/bug/firefox/presubj', which is also in
package firefox-2 0:2.0.0.21~tb.21.308+nobinonly-0ubuntu0.8.04.1
Errors were encountered while processing:
 /var/cache/apt/archives/firefox_3.6.7+build2+nobinonly-0ubuntu0.9.10.1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install. Trying to recover:
dpkg: dependency problems prevent configuration of abrowser:
 abrowser depends on firefox; however:
  Package firefox is not installed.
dpkg: error processing abrowser (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of abrowser-branding:
 abrowser-branding depends on firefox (=
3.6.7+build2+nobinonly-0ubuntu0.9.10.1); however:
  Package firefox is not installed.
dpkg: error processing abrowser-branding (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 abrowser
 abrowser-branding
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done

I looked up my broken packages and they are as follows

abrowser
abrowser-branding
firefox-3.0

On Mon, Jul 26, 2010 at 12:30 PM, JasonFriedman80238 <
<email address hidden>> wrote:

> I experienced the same issue and did:
>
> $ sudo aptitude remove firefox
>
> $ sudo aptitude install firefox
>
> Upon the install command I was presented with:
>
> The following actions will resolve these dependencies:
>
> ...

The updated firefox package is based on the Lucid packaging, and thus is not parallel installable with the firefox-2 package from hardy. firefox-2 was removed from the archive in Intrepid, and you should remove firefox-2 to fix your current issue. We will ship an update to add the appropriate conflicts to ensure that this happens automatically

This bug was fixed in the package firefox-3.5 - 3.6.9+build1+nobinonly-0ubuntu0.9.10.2

---------------
firefox-3.5 (3.6.9+build1+nobinonly-0ubuntu0.9.10.2) karmic-security; urgency=low

  * New upstream release v3.6.9 (FIREFOX_3_6_9_BUILD1)
    - see USN-975-1

  * Fix LP: #609941 - Provide a transition path from residual Firefox 2
    packages left over from Hardy
    - update debian/control
    - add debian/firefox-2.preinst
 -- Chris Coulson <email address hidden> Wed, 25 Aug 2010 22:59:50 +0100