hello dear John
first of all - many many thanks for he quick reply; I really appreciate your quick reply.
the issues are solved -
imageine: i switeched the fb-site to another account - so i was not able to see the faces (this maybe probably has something to do with corresponding configurations and adjustments in the fb-plugin.)
But after i switched the facebook-account (at the facebook-site) back to the main-account, the faces on the webpage - http://www.ex-libri.org now appear very (!!!) quick.
Thanks for all you did! thanks for the plugin and the great support.
Regards
Martin
ps - i mark the thread as resolved!