snmpd.conf gets overwritten

Hi All,
I am using Net-SNMP Version 5.2.1.2 and building an agent on LINUX.
Agent was running fime and sending appropriate traps. Suddenly I  see
that I am receiving 2 traps on one event.For this when I started trouble
shooting, then observed that snmpd.conf is overwritten and i am not able to
read the contents in it. When i stop the netsnmp agent and replace the
snmpd.conf file again it gets overwritte. If any one of you have occured the
problem please let me know the solution.
I am also attaching the overwritten snmpd.conf file format.
Please help me in resoulving this problem
Thanks in advance.

regards
Ravi Kumar

#
# net-snmp (or ucd-snmp) persistent data file.
#
############################################################################
# STOP STOP STOP STOP STOP STOP STOP STOP STOP
#
#          **** DO NOT EDIT THIS FILE ****
#
# STOP STOP STOP STOP STOP STOP STOP STOP STOP
############################################################################
#
# DO NOT STORE CONFIGURATION ENTRIES HERE.
# Please save normal configuration tokens for snmpd in
SNMPCONFPATH/snmpd.conf.
# Only "createUser" tokens should be placed here by snmpd administrators.
# (Did I mention: do not edit this file?)
#


setserialno 1691614697
engineBoots 1
oldEngineID 0x80001f888043699b3bb23ed643