Google Chrome's New Tab Page is not populating the most frequented visted sites grid with anything:
It's been sitting like that1 for months. My work machine populates them fine.
Edit: Google Chrome Version 18.104.22.1682
Edit 2: (Possibly related) Chrome is not storing any history
1 I even tried clicking Restore all removed thumbnails
2 Updated to 22.214.171.124 just now. Previous build was 78.