I noticed today that my Contact list became void of all the pictures it had. No one had pictures assigned to their contact card in my list, but they all still had the Facebook link. I decided to reinstall the Social Networking app to see if it would remedy this, but anything related to social networking that I reinstalled didn't help. Only some of my contacts have pictures now, and I've let it sync for a while now. I find it strange that all my contacts lost their cached pictures, was it possible I cleared the cache on an app and cleared out all the pictures?