Comment 1 for bug 846451

# apt-get install flashplugin-nonfree

Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 flashplugin-nonfree : Depends: flashplugin-installer but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
# apt-get install flashplugin-nonfree flashplugin-installer

Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 flashplugin-installer : Depends: flashplugin-downloader but it is not installable
                         Depends: nspluginwrapper but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
# apt-get install flashplugin-nonfree flashplugin-installer

Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 flashplugin-installer : Depends: flashplugin-downloader but it is not installable
                         Depends: nspluginwrapper but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

The more that I look at this is appears that the flashplugin-downloader is missing....