Please stabilise =sci-geosciences/qgis-1.7.0 and its dependencies. (I am not exactly sure what all i added to depend on it) Also x11-libs/qwtpolar should go with this.
Arches, please test also: dev-db/spatialite-2.4.0_rc4
amd64 ok
amd64: emerge pass, application launches.
amd64 done. Thanks Agostino and Elijah
x86 stable, all arches done.