I can tell you, that:
Post Page Associator:
Selection mode: All post which are at least in one of these categories
Number of pages > 5
Do you think that they are called at the same time? I know that Sharedaddy works on pages, where Post Page Associator is not active - http://www.bylivkolding.dk/test/?page_id=45
And I know that Post Page Associator worked before Jetpack was installed.
Thanks for the help!
// Thomas Gam