This is not a question and instead I just want to share a workaround on how to install astah-community on Ubuntu.

The downloadable .deb file (obtained at http://members.change-vision.com/files/astah_community/6_4_1/astah-community_6.4-1_all.deb) always gets stuck and wouldn't seem to complete installation in my environment.
Tried OS) Ubuntu 10.10, Ubuntu 11.04 in different networks.

I ended up purging corrupted installation following the discussion here: http://www.linuxquestions.org/questions/ubuntu-63/cannot-install-and-remove-package-847795/

My workaround was to use commandline method as shown here: http://astah.net/faq/uml/how-to-run-astah-on-linux#apt

Hope it helps some of you.