Outlook address list not updating
If you use a Microsoft Exchange account, your Global Address List can contain global distribution lists, which are available to everyone who uses that network.
Outlook Social Connector is normal - I have it on my contacts as well.
These screenshots are from Outlook 2013, but the process works identically in 2010 or 2007. Choose "Update All", wait a moment, and you're done. I can manually update each contact with the nice "Update" button and it automatically synchs the contact with AD, but I can't do that for all contact with a simple buttonclick? Switch to your contacts view, then go to the "Send/Receive" tab.