7.4Beta1 "failed to create socket: Address family not supported by protocol"

I'm receiving the following error during startup:

Aug 10 14:11:27 thunder postgres[18613]: [1-1] LOG:  failed to create
socket: Address family not supported by protocol

Aug 10 14:11:27 thunder postgres[18619]: [2-1] LOG:  database system was
shut down at 2003-08-10 14:11:11 MDT

Aug 10 14:11:27 thunder postgres[18619]: [3-1] LOG: checkpoint record is
at 4/E28389B4

Aug 10 14:11:27 thunder postgres[18619]: [4-1] LOG:  redo record is at
4/E28389B4; undo record is at 0/0; shutdown TRUE

Aug 10 14:11:27 thunder postgres[18619]: [5-1] LOG:  next transaction
id: 80139; next oid: 35014046

Aug 10 14:11:27 thunder postgres[18619]: [6-1] LOG:  database system is
ready

And yet everything appears to be working fine.  Something I've done
wrong in the build/configure?

tassiv=# select version();
                                                  version

-----------------------------------------------------------------------
------------------------------------ PostgreSQL 7.4beta1 on
i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.2.2 (Mandrake Linux 9.1
3.2.2-3mdk)

Cheers,
Rob

--
 14:51:35 up 9 days,  7:37,  4 users,  load average: 1.13, 1.18, 1.03