Problem with datetime in updates

Hello.

I have a table definition like that:

      <table name="org_org">
      	<constraints>
	  ...
  	</constraints>
	<fields>
	  <field name="id" type="key" auto="Y" defaultwith="serial"
		  nullable="N"/>
  	  <field name="nick" type="string" length="25" nullable="N"/>
  	  <field name="name" type="string" length="60" nullable="N"/>
  	  <field name="created" type="datetime" defaultwith="timestamp"
	  						     ^^^^^^^^^^
		  nullable="N"/>
  	  <field name="status" type="string"/>
  	  <field name="status_updated" type="datetime"
		  defaultwith="timestamp" nullable="N"/>
  	</fields>
        ...
      </table>


Postgresql gives this schema:

...

CREATE TABLE "org_org" (
	"id" bigint DEFAULT nextval('org_org_id_seq'::text) NOT NULL,
	"nick" character varying(25) NOT NULL,
	"name" character varying(60) NOT NULL,
	"created" timestamp without time zone DEFAULT now() NOT NULL,
	          ^^^^^^^^^
	"status" text,
	"status_updated" timestamp without time zone DEFAULT now() NOT NULL,
	Constraint "pk_org" Primary Key ("id")
);

...

And, as a query example from line command:

 id | nick | name |          created           | ...
----+------+------+----------------------------+ ...
 11 | f    | ff   | 2004-03-29 01:23:22.886056 | ...
					^^^^^^

i.e.: timestamp has 6 decimal digits for seconds

The problem arises when I you try to update from gnue-forms, which
issues this statement:

DB005: [RecordSet:56] _postChanges: statement=UPDATE org_org SET
name='fff' WHERE id='11' AND status_updated='2004-03-29 01:23:22' AND
created='2004-03-29 01:23:22' AND name='ff' AND nick='f' AND
         ^^^^^^^^^^^^^^^^^^^
status='prop'

i.e.: no decimal digits for seconds, so none record gets updated.

¿Any suggestion about how can I deal with it?

thanks in advance.
-- 
José Esteban
Granada - Spain