[ubuntu] Cannot reinstall AWN through synaptic

I get a message like this:

awn-manager:

Package awn-manager has no available version, but exists in the database.
This typically means that the package was mentioned in a dependency and never uploaded, has been obsoleted or is not available with the contents of sources.list

And the same goes for Avant-Window-Navigator.

And these were there not long ago, but now I cannot find it anywhere to download and install.

I have already uninstalled avant now I want to reinstall it (it was acting funky)