MRTG not honouring squid mib file ( Broken MRTG/Net-SNMP)

[Babu C]

Hi List,
This is regarding the mrtg/net-snmp ports of Freebsd not honouring the 
LoadMIBs statement. I have already discussed this issue in squid 
mailing list and mrtg mailing list and they found this issue is 
happening only in the FreeBSD now I am asking the help here to resolve 
this issue. As I have upgraded the squid box to 3.1.8 and everything is 
working fine except the graph part with mrtg.

Details of system as follows
OS FreeBSD : 8.1 
Squid	 : 3.1.8
MRTG : mrtg-2.16.4

My mrtg.cfg is as below

LoadMIBs: /usr/local/etc/mrtg/squid.mib
EnableIPv6: no
WorkDir: /usr/local/www/apache22/data
Options[_]: bits,growright

Target[proxy-hit]:
cacheHttpHits&cacheServerRequests:public at 127.0.0.1:3401
MaxBytes[proxy-hit]: 100000
Title[proxy-hit]: HTTP Hits
Suppress[proxy-hit]: y
LegendI[proxy-hit]: HTTP hits
LegendO[proxy-hit]: HTTP requests
Legend1[proxy-hit]: HTTP hits
Legend2[proxy-hit]: HTTP requests
YLegend[proxy-hit]: perminute
ShortLegend[proxy-hit]: req/min
Options[proxy-hit]: nopercent, perminute, dorelpercent, unknaszero,
growright, pngdate
#PNGTitle[proxy-hit]: Proxy Hits

Target[proxy-srvkbinout]: 
cacheServerInKb&cacheServerOutKb:public at 127.0.0.1:3401
MaxBytes[proxy-srvkbinout]: 76800
Title[proxy-srvkbinout]: Cache Server Traffic In/Out
Suppress[proxy-srvkbinout]: y
LegendI[proxy-srvkbinout]: Traffic In
LegendO[proxy-srvkbinout]: Traffic Out
Legend1[proxy-srvkbinout]: Traffic In
Legend2[proxy-srvkbinout]: Traffic Out
YLegend[proxy-srvkbinout]: per minute
ShortLegend[proxy-srvkbinout]: b/min
kMG[proxy-srvkbinout]: k,M,G,T
kilo[proxy-srvkbinout]: 1024
Options[proxy-srvkbinout]: nopercent, perminute, unknaszero, 
growright, pngdate

I have verified that squid snmp is working through the following 
command

#snmpget -On -m /usr/local/etc/mrtg/squid.mib -v 2c -c public 
127.0.0.1:3401 cacheHttpHits cacheServerRequests cacheServerInKb 
cacheServerOutKb cacheUptime CacheSoftware cacheVersionId

This gives me results without any errors so snmp part of squid is 
working fine.Also snmpwalk is working fine too on squid's 3401 port.
Now when I run mrtg I could see the following errors in mrtg.log file

010-10-04 12:37:33 -- Started mrtg with config 
'/usr/local/etc/mrtg/mrtg.cfg'
2010-10-04 12:37:33 -- Unknown SNMP var cacheHttpHits
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheServerRequests
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheUptime
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheSoftware
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheVersionId
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Use of uninitialized value $ret[-2] in
concatenation (.) or string at /usr/local/bin/mrtg line 2261.
2010-10-04 12:37:33 -- Use of uninitialized value $ret[-1] in
concatenation (.) or string at /usr/local/bin/mrtg line 2261.
2010-10-04 12:37:33 -- Unknown SNMP var cacheServerInKb
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheServerOutKb
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheUptime
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheSoftware
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheVersionId
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Use of uninitialized value $ret[-2] in
concatenation (.) or string at /usr/local/bin/mrtg line 2261.
2010-10-04 12:37:33 -- Use of uninitialized value $ret[-1] in
concatenation (.) or string at /usr/local/bin/mrtg line 2261.
2010-10-04 12:37:33 -- 2010-10-04 12:37:33: ERROR:
Target[proxy-hit][_IN_] ' $target->[0]{$mode} ' did not eval into
defined data
2010-10-04 12:37:33 -- 2010-10-04 12:37:33: ERROR:
Target[proxy-hit][_OUT_] ' $target->[0]{$mode} ' did not eval into
defined data
2010-10-04 12:37:33 -- 2010-10-04 12:37:33: ERROR:
Target[proxy-srvkbinout][_IN_] ' $target->[1]{$mode} ' did not eval
into defined data
2010-10-04 12:37:33 -- 2010-10-04 12:37:33: ERROR:
Target[proxy-srvkbinout][_OUT_] ' $target->[1]{$mode} ' did not eval
into defined data

All I could make out from these error was mrtg not reading squid.mib 
file. Am I right?
Ofcoz its not a issue of permission, also I am trying to run mrtg as 
root to get it started.

Now I am stuck and I suspect a broken mrtg? or did I go wrong 
somewhere? Do kindly let me know what went wrong and how to proceed
further.
Thanx in advance
Babs