Server Admin no data in web graphs

Two things come to mind (I have had this problem since April):
1) Did you upgrade from 10.4 to 10.5 (and/or from Apache 1.3 to 2.2)?
2) Did you install any software that would make changes to httpd.conf (or any other Apache file)?

I upgraded from 10.4 to 10.5. Had a bit of trouble then migrating Apache to 2.2. I also installed Filemaker Server 9 and FogBugz. Filemaker Server 8 was already installed prior to the 10.5 upgrade, so I think it made changes to .conf and FMS9 then commented out those changes, in order to run its own Apache 1.3 server on a different port. FogBugz just added a *.conf to the end, to make changes for files served from its directory.

One other thing I notice: each time you select the Web Overview section of Server Admin, the start time changes to the current time.

Unfortunately, I haven't found any servermgrd error messages in my system log that would correspond to these problems.

Found the fix. I compared my /etc/apache2/httpd.conf to the httpd.conf.default and httpd.conf.defaultserver and found the following sections:

Listen 127.0.0.1:9010
DocumentRoot "/tmp"
ErrorLog "/var/log/apache2/error_log"
<Directory "/tmp">
Order Deny,Allow
Deny from All
Allow from 127.0.0.1
</Directory>
<Location "/server-status">
SetHandler server-status
Order Deny,Allow
Deny from all
Allow from 127.0.0.1
</Location>
ExtendedStatus On

In order for the graph to work, you need :9010 open (but blocked outside of the localhost), the /server-status on (does not need need to be open, but it helps to troubleshoot), and most importantly: ExtendedStatus On. This line was commented out by my Filemaker Server 8 install: I had Server 10.4 installed w/ Apache 1.3. FMS8 commented the line. The comment was kept thru the Server 10.5 install and the Apache 2 migration. Uncommenting it in httpd.conf and restarting the web service showed an immediate change in server admin: the time stayed at the correct start time, and within a minute I saw the graph collect data.