Multiple sets in one pdu

Hi,
 
I'm facing a problem with multiple sets in one pdu, basically it's
sequence issue.
 
Say the pdu is set for  5 oids as following: oid_1.1   oid_2.1   oid_1.2
oid_2.2   oid_1.3  (oid_1 and oid_2 are variables in two different
tables, .1/.2/.3 are indice)
 
It seems the agent does some optimization, so instead of doing:
 
   set oid_1.1
   set oid_2.1
   set oid_1.2
   set oid_2.2
   set oid_1.3
 
it actually does following:
 
   set oid_1.1
   set oid_1.2
   set oid_1.3
   set oid_2.1
   set oid_2.2
 
This is not what I want, I want the original sequence. I'm using
net-snmp 5.1. 
 
Has anyone seen this issue? I found in ChangeLog following, but seems
it's not what I see.
 
*5.0.1*
Fixes:
    - the agent should properly handle requests in the right order.
      (e.g., restrict the agent to processing only one SET at a time)