[FWTools] ogrinfo warns about 'Multi-column primary key' but there is none

[Stefan Keller]

I have a PostgreSQL table which goes like shon below.
When I'm querying the my db 'gisdb' with ogrinfo it issues a warning:

ogrinfo -ro PG:"dbname=gisdb"
Warning 1: Multi-column primary key in 'towns' detected but not supported.
INFO: Open of `PG:dbname=gisdb'
      using driver `PostgreSQL' successful.
1: towns (Multi Polygon)

So the orginfo pretends that there is a "Multi-column primary key" but there
is no primary key.

Someone any explanation on this?

-- Stefan

 CREATE TABLE towns
( gid serial NOT NULL, objectid int8, towns_id int8, town_id int4,
  town varchar, fips_stco int4, ccd_mcd varchar, fips_place varchar,
  pop1980 int4, pop1990 int4, pop2000 int4, popch80_90 int4, popch90_00
int4,
  fourcolor int4, "type" varchar, island int4, fips_mcd int4,
  fips_count int4, shape_area numeric, shape_len numeric, the_geom geometry,
  CONSTRAINT enforce_geotype_the_geom
    CHECK (geometrytype(the_geom) = 'MULTIPOLYGON'::text OR the_geom IS
NULL),
  CONSTRAINT enforce_srid_the_geom CHECK (srid(the_geom) = 26986)
)
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