I removed all flash related packages (flashplugin-installer and flashplugin-nonfree) there was no adobe-flashplugin package. Then I reinstalled the flashplugin-installer - this time it worked without being stuck.
I removed all flash related packages (flashplugin- installer and flashplugin- nonfree) there was no adobe-flashplugin package. Then I reinstalled the flashplugin- installer - this time it worked without being stuck.