The first thing that come to mind is that you may be looking at your stats for a 'date range' set to the past.
The date range tool, which appears on all the Campaign Management pages, has a 'sticky' setting that stays where you put it until you change it. So if you were looking at the stats for a particular day, for instance, the date range will stay on that day until you manually change it.
It this turns out to not be the issue, then I'd say this would be a question best answered by AdWords support - as they can see your actual account, which no one here is able to do.
AWA