Comment 0 for bug 239952

Binary package hint: firefox-3.0

ubuntu hardy heron 8.04 amd64

$ apt-cache policy firefox-3.0
firefox-3.0:
  Installed: 3.0+nobinonly-0ubuntu0.8.04.1
  Candidate: 3.0+nobinonly-0ubuntu0.8.04.1
  Version table:
 *** 3.0+nobinonly-0ubuntu0.8.04.1 0
        500 http://nl.archive.ubuntu.com hardy-proposed/main Packages
        100 /var/lib/dpkg/status
     3.0~rc1+nobinonly-0ubuntu0.8.04.1 0
        500 http://nl.archive.ubuntu.com hardy-updates/main Packages
     3.0~b5+nobinonly-0ubuntu3 0
        500 http://nl.archive.ubuntu.com hardy/main Packages

Try go to ubuntuforums.org and try to download/open a text .txt attachment.
Example: http://ubuntuforums.org/showthread.php?t=828399

Click on listings.txt to download it, the firefox download manager (window "opening listings.txt") pops up and choose "open with" "Text editor"

The resulting error is:
Download error
/tmp/listings.txt could not be opened, because the associated helper application does not exist. Change the association in your preferences.