Nope....didn't work for me. I've got the following:
sudo apt-get install gsfonts gsfonts-x11 flashplugin-nonfree
"
Setting up flashplugin-installer (11.2.202.251ubuntu0.10.04.1) ...
Downloading...
--2012-12-28 14:41:22-- http://archive.canonical.com/pool/pa...51.orig.tar.gz
Resolving archive.canonical.com... 91.189.92.150, 91.189.92.191
Connecting to archive.canonical.com|91.189.92.150|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2012-12-28 14:41:22 ERROR 404: Not Found.
download failed
The Flash plugin is NOT installed.
"
Download link is broken and the package ain't over there anymore, unfortunately.
I'll try something else...



I don't know if that matters but I'm thinking that is good to describe every step which I've made. 