Created attachment 195361 [details]
clam.zip

Downstream bug may be found at:
https://bugs.launchpad.net/ubuntu/+source/file-roller/+bug/721284

1) lsb_release -rd
 Description: Ubuntu oneiric (development branch)
 Release: 11.10

2) apt-cache policy file-roller
file-roller:
  Installed: 3.1.2-0ubuntu1
  Candidate: 3.1.2-0ubuntu1
  Version table:
 *** 3.1.2-0ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ oneiric/main i386 Packages
        100 /var/lib/dpkg/status

3) What is expected to happen via the Terminal:

cd ~/Desktop && wget https://bugs.launchpad.net/ubuntu/+source/file-roller/+bug/721284/+attachment/1857724/+files/clam.zip && file-roller -h clam.zip

is the archive is extracted quickly and successfully.

4) What happens instead is a window pops up noting:

Could not open "clam.zip"
Archive type not supported.

This is a regression from Natty as the file was extracted in it with no problem.

lsb_release -rd
Description:	Ubuntu 11.04
Release:	11.04

apt-cache policy file-roller
file-roller:
  Installed: 2.32.2-0ubuntu0.1
  Candidate: 2.32.2-0ubuntu0.1
  Version table:
 *** 2.32.2-0ubuntu0.1 0
        500 http://us.archive.ubuntu.com/ubuntu/ natty-updates/main i386 Packages
        100 /var/lib/dpkg/status
     2.32.1-0ubuntu4 0
        500 http://us.archive.ubuntu.com/ubuntu/ natty/main i386 Packages