[Featureserver] problems with OpenLayers WFS

[G. Allegri]

I put it:

 My featureserver.cfg is:
 [metadata]
 default_service=GeoJSON
 srs=3003 (I tried this)

 [yyy]
 type=PostGIS
 dsn=host=localhost dbname=iet user=guest password=guest
 layer=yyy
 id=ogc_fid
 geometry=wkb_geometry
 srs=3003 (and this)

Sometimes I geti
An error occurred: 'ammcom03'
  File "/www/projects/darfur/lib/featureserver-1.11/FeatureServer/Server.py",
line 186, in modPythonHandler
    request_method
  File "/www/projects/darfur/lib/featureserver-1.11/FeatureServer/Server.py",
line 133, in dispatchRequest
    request.parse(params, path_info, host, post_data, request_method)
  File "/www/projects/darfur/lib/featureserver-1.11/FeatureServer/Service/__init__.py",
line 66, in parse
    action = self.get_select_action(path_info, params)
  File "/www/projects/darfur/lib/featureserver-1.11/FeatureServer/Service/__init__.py",
line 110, in get_select_action
    ds = self.service.datasources[self.datasource]

some other:
An error occurred: current transaction is aborted, commands ignored
until end of transaction block

  File "/www/projects/iet/lib/featureserver-1.11/FeatureServer/Server.py",
line 186, in modPythonHandler
    request_method
  File "/www/projects/iet/lib/featureserver-1.11/FeatureServer/Server.py",
line 145, in dispatchRequest
    result = method(action)
  File "/www/projects/iet/lib/featureserver-1.11/FeatureServer/DataSource/PostGIS.py",
line 204, in select
    cursor.execute(str(sql), attrs)

I'm really getting mad. I tried with a 4326 layer and it works ok...