Zabbix 2.2.2 Don't Recive SNMP Packets (losing too many of them)

[DanielFRocha]

Good Afternoon,

My Zabbix is losing too many packets, it almost don't recive any of them, just one or two in a hour from my Cisco SF300-48p.

There are any known Bugs in this version about SNMP?
Or I need a special configuration in Zabbix, once snmpwalk is working perfectly.

Thanks