I’m running Nagios 3.0.3 on CentOS 5. We have not encountered this problem on another Nagios box we just set up on CentOS 5 with Nagios 3.0.2. When we go to the service overview page, we see all the services. When we hit refresh, it takes us back to the Nagios welcome page. We would expect it to refresh the service overview page (this is what happens on every other Nagios install we have). Is this a bug in 3.0.3?
well, it’s not really an answer, but I sometimes have the same problem … which usually goes away after closing and re-launching my web browser.
Give it a try; you can even try rebooting your computer.
Hope this will “solve” your problem (it may happen from time to time again, but it’s quite rare …)