Safari 6 Top Sites doesn't update
In the previous version of Safari (5), under OS X Lion, the "Top Sites" thumbnails would be flagged with a checkmark when those pages had been updated. In Version 6, under OS X Mountain Lion, none of the "Top Sites" are being flagged when the pages have been updated. I don't see an option under Safari preferences to enable/disable the "Updated" indicator. Any suggestions for restoring this feature are greatly appreciated.
And, yes, I deleted the Safari plist file from ~/Library/Safari, and it did not make any difference.
MacBook Pro 15" 2.4Ghz Intel Core Duo, OS X Mountain Lion, ACD