We updated the Social Modules zip file with the new Comment module. It's no longer in the other thread.
Regarding the Fan box, did you upgrade that to the 3.2 version?
As for social buttons, I don't know of any that work off-hand, but I know we've been on many sites with them working. My guess is that if it has Facebook functionality included in the module/widget you're using, try disabling it to see if that helps things start working. If so, we can try to investigate further.
In general, we shouldn't cause conflicts with other non-related integration add-ons (for things like Twitter or RSS feeds). Not sure why that's happening.