When I launch Address Book and search for a contact, nothing visibly happens.
Also if I double click on a contact name in the group list, I see the contact info in a popup, but if I single click, I don't see it in the right hand pane.
And, also, if I look for a contact in Spotlight, I find it, but if I go to it, Address Book launches but the contact does not appear.
In short, it looks like the right hand pane in AddressBook is frozen. And this includes multiple attempts to relaunch it.
I have been using Lion from the start without a problem like this. I did install a few apps yesterday (Sparrow, Alfred and TotalFinder) and the problem appeared today, so there may be a connection.
What can cause this problem with Address Book?