I got cacti to work and it was graphing for about an hour. The cron is running as per the log. I don't see any errors in poller.php. Here is some output from cacti.log:
09/20/2013 10:55:02 AM - SYSTEM STATS: Time:0.7426 Method:cmd.php Processes:1 Threads:N/A Hosts:15 HostsPerProcess:15 DataSources:199 RRDsProcessed:104
So it looks like its polling but doesn't want to graph. Can anyone help?