Starting this morning, we've had to perform some unexpected maintenance in AdWords. Due to this maintenance, your statistics may be delayed up to 12 hours. This delay is temporary, and only your statistics will be affected. Your ads will continue to show as per your campaign settings.
We apologize for any inconvenience this may cause you and appreciate your patience as we work to resolve this. Please check our known issues page for updates.
Update 3-5-2009:
All stats are now up-to-date.