Indeterminted and Insufficient Data on Reports?

[OrlandoErnest]

Hi,

I've been using Nagios for a year and a half so far, and now I'm facing a problem with generating reports on Trends and Availability Report, both of them showing "Indeterminate" and "Insufficient Data", respectively, if the selected time period exceeds more than 48 hours.
I read in documentation that this is because Nagios can't find information for that host/service on a given time period. Please, correct me if I'm wrong about this.

Recently I erased log older than 31 days, because I was running out of space, and there's no need to keep more than this time period. So I'm not sure if this is totally related to the problem.

The logs are where they're supposed to be (/usr/local/nagios/var/ and /usr/local/nagios/var/archives), being generated every midnight, rotated by syslog.
The ownership and permissions are correct (user 'nagios', group 'nagios') for the installation directories (especially 'var', 'sbin' and 'share').
My Apache user (wwwrun) is running on the Nagios group and I don't have any difficult using others parts of the interface/CGI.