Strange Query (loopback)

[Walker Simon-SWALKER1]

Hi Everyone, 
 
Thanks to people out there I have a test server running 9.2.2.rc1 up now.
 
However I noticed, what I think is, a strange query to the DNS Server that I would like to try and track down.
 
On the DNS Server I have the named.run output that highlights a A query for yahoo.com, it says that the originating clients is the loopback 127.0.0.1. 
 
However if I physically type in nslookup yahoo.com on the server it does a PTR lookup of the loopback address first then issues a query for yahoo.com
 
With this mystery query for yahoo.com there is no loopback PTR lookup. So what I am wondering is how can I track down this request to either a program or connection. I tried increasing debug but the output don't mean much to me.
 
Of note I am the only "known" user of this network, i.e there are no other users on this test setup.
 
example from the DNS Server [named.run]
mystery query > 

Dec 19 15:15:38.153 client 127.0.0.1#32924: query: yahoo.com IN A

Dec 19 15:15:38.154 createfetch: yahoo.com A

if I perform a nslookup for yahoo.com on the host >

Dec 19 15:46:47.869 client 127.0.0.1#32927: query: 1.0.0.127.in-addr.arpa IN PTR

Dec 19 15:46:47.872 client 127.0.0.1#32928: query: yahoo.com IN A

Dec 19 15:46:47.873 createfetch: yahoo.com A

 
I undertstand that this could be something quite normal but I am learning about DNS as I go so appologies if this is a silly mistake on my part.
 
Regards, 
 
Si.