Currently Being ModeratedJan 17, 2012 2:06 PM (in response to nowhiz)
Try rebuilding the database file Address Book uses.
To do that, quit Address Book, then while in Finder hold down the Option key and click the Go menu - select Library from the list. That will open the hidden Library folder in your user home folder. In that folder, locate and open the Application Support folder, then the AddresBook folder. In that folder locate the file named AddressBook-v22.abcddb and throw it away.
Then close all those windows and start up Address Book, then test.
Currently Being ModeratedJan 17, 2012 2:58 PM (in response to nowhiz)
I couldn't empty the trash with that .abcddb file in it until I logged out of my account -- quitting all applications didn't work -- but when I logged back in the trash emptied and Address Book is working great!