[Featureserver] problems with OpenLayers WFS

[G. Allegri]

I'll do the upgrade to 1.12.

My featureserver.cfg is:
[metadata]
default_service=GeoJSON

[yyy]
type=PostGIS
dsn=host=localhost dbname=iet user=guest password=guest
layer=yyy
id=ogc_fid
geometry=wkb_geometry

My geometry colums in PostGIS have the SRID setted (EPSG:3003)
In OL I've setted the srs correctly as you can see from the request
produced by OL (I've grabbed it with Firebug):
http://host_url/iet/IETmapfish/client/fs/fs.py/yyy?format=WFS&maxfeatures=600&SERVICE=WFS&VERSION=1.0.0&REQUEST=GetFeature&SRS=EPSG%3A3003&BBOX=1437940.723214286,5056734.944196429,1903269.276785714,5159996.055803571

If I remove the parameters created by OL the GML is correctly produced...