Cacti

I have a new cacti installation 0.8.6i-5.fc6 using yum. I can't seem to get interface statistics for graphs + Running data query [1]. + Found type = '3' [snmp query]. + Found data query XML file at '/usr/share/cacti/resource/snmp_queries/interface.xml' + XML file parsed ok. + Executing SNMP walk for...

I've attached a graph outlining my problem. The number just don't match up with my sar output for that time period. CPU %user %nice %system %iowait %idle 08:00:00 AM all 0.00 0.00 0.12 0.00 99.87 08:05:01 AM all 5.51 0.00 18.98 0.00 75.51 08:09:59 AM all 16.81 0.00 47.91 2.78 32.50 08:15:00 AM all 1...