no events in event logs

One one Windows2000 server, with AD, all of a sudden, when I go to look at the event log, there are no events in any of the logs. Actually,, in the system log, if I look at the titile bar it will show over 1700events, even though the even screen is blank, as soon as I lok at different logs, they all show 0 events. The service is running, and I cant figure what is going on, any ideas?

(system is virus protected and updated daily)