i ran Synaptic and installed python-gdata and finally succeed in activating the YouTube plugin fro Totem
i had luck to find with Google that article http://tecnocode.co.uk/2007/10/12/totem-youtube-plugin/ which mentioned the need of the GData Python library.
that can't be discovered easily therefore python-gdata should be installed by default or on demand, when trying to activate the plugin
i ran Synaptic and installed python-gdata and finally succeed in activating the YouTube plugin fro Totem
i had luck to find with Google that article http:// tecnocode. co.uk/2007/ 10/12/totem- youtube- plugin/ which mentioned the need of the GData Python library.
that can't be discovered easily therefore python-gdata should be installed by default or on demand, when trying to activate the plugin