Cacti stops updating graphs after upgrade to version 0.8.6j
It turns out the latest update to Cacti, the popular SNMP and RRDTool graphing program, has a bug that makes it so graphs based on SNMP Data aren’t updated after upgrading. The problem has to do with using the PHP “snmpgetnext” function, which is unimplemented in PHP 4.
There is a discussion on Cacti’s forum at http://forums.cacti.net/about19199.html where a developer posts a new ping.php that will resolve the problem.