Cacti Graphs stopped populating for all hosts and services

[andyday]

Our CACTI implementation stopped populating graphs for all of our switches, routers and devices on July 2nd. All historical data still displays fine. The logs show:

07/02/2013 12:35:05 AM - SPINE: Poller[0] Host[11] ERROR: Empty result [x.x.x.x]: 'python /var/www/html/cacti/scripts/check_pertrunk.py

07/02/2013 12:35:01 AM - SPINE: Poller[0] Host[25] TH[1] WARNING: Max OIDS is out of range with value of '1000'. Resetting to default of 5

07/02/2013 12:30:17 AM - SYSTEM STATS: Time:15.0964 Method:spine Processes:3 Threads:400 Hosts:22 HostsPerProcess:8 DataSources:1859 RRDsProcessed:917

Any suggestions on where to look or what might be going on? Thank you.

[gandalf]

Has there been an issue with the local time of that server?
R.