<snip> <div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">The series of events were this. 1. It's working. 2. Build and install 2.12. 3. It's broken. Seems pretty clear to me it's either a code bug, or the new code doesn't like something about my config files that the older version didn't care about. </blockquote></div> <snip> I have had the same problem with my Nagios installation, only I've installed it from a pre-packaged version of Nagios for CentOS 4 and 5. I noticed the problem when having to view the availability reports. My quick fix solution was to find another avail.cgi script that was from the previous installation and put it in the current avail.cgi's place. I also noticed that if I change my servicegroup/hostgroup names to not include spaces, then the reports were generated as expected. I also think it could be a code bug, or an undocumented feature :P Regards, Nolan