Setting up flashplugin-downloader (11.1.102.55ubuntu1) ...
Downloading...
--2012-04-30 08:42:43--  http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_11.1.102.55.orig.tar.gz
Resolving archive.canonical.com (archive.canonical.com)... 91.189.92.191, 91.189.92.150
Connecting to archive.canonical.com (archive.canonical.com)|91.189.92.191|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2012-04-30 08:42:44 ERROR 404: Not Found.

download failed
The Flash plugin is NOT installed.
dpkg: error processing flashplugin-downloader (--configure):
 subprocess installed post-installation script returned error exit status 1