I just released the second version of the thunar-archive-plugin. It includes a bunch of new translations, and fixes the problem that the folder was not properly reloaded after creating or extracting an archive. It requires Thunar 0.2.2alpha2 or above and File Roller.

Download: http://developer.berlios.de/project/showfiles.php?group_id=910&release_id=9778

Release notes: http://developer.berlios.de/project/shownotes.php?release_id=9778

Website (with screenshots): http://foo-projects.org/~benny/projects/thunar-archive-plugin/index.html</p>