During last power outage my server went down and it seems some files were damaged
during the improper shutdown. Now status.cgi shows question marks (exactly such string: '???') in the column titled 'Duration'.
The question marks appear on the localhost (disks, users, processess) as well as on remote hosts (PING).
How can I fix this?
I'm using Nagios v3.0.6 - packaged for Debian 5.