Errors with Web Analytics

We've been running web analytics without error for a long time and we started getting this message a few weeks ago:

There is no data available for this report. Here are some reasons: (1) Web Analytics has not been enabled long enough to generate data; (2) There is insufficient data to generate this report; (3) Data logging requited for this report might not be enabled; (4) Data aggregation might not be enabled at the level required for this report.

I've checked the all the jobs and they appear to be running ( we did restart them). Restarted the web apps and reboot server.