Not able to install flashplugin-nonfree - "libruby (>=1.6.7-3) but it is not installable"

[Ari Torhamo]

Hello,

I have a problem getting flashplugin-nonfree installed in Breezy. When I
try to install it with Synaptic, I get 

flashplugin-nonfree:
Dependencies: libruby (>=1.6.7-3) but it is not installable

The funny thing is that libruby1.8 is available in the repositories. I
even tried to install it beforehand, but it didn't help. Does anyone
know what's wrong here? Thanks :-)

Ari