a) The JFBCContent plugin should help you automatically add the Like button to all articles. There's parameters that let you configure which types of articles it's shown on, as well as position. In the next JFBConnect release, we'll be adding more features for selecting the category of the articles and other ways to fine-tune it, but it's not there yet. For more information on the content plugin, see:
www.sourcecoast.com/blog/item/102-facebo...-like-content-plugin
b) Yes, that's definitely the incorrect behavior... First, please ensure that the component and the required plugins are installed correctly. You can check this on the JFBConnect Overview page, look at the Extension Check - Required Extensions area. There should be green checks next to the User, Authentication, and System plugins, and no warning about 'ordering of the User' plugin underneath. If all looks good there, send us a URL of your site so we can see what's happening.
Thanks!