not working for me:

W: GPG error: http://repository.maemo.org fremantle Release: The following signatures were invalid: BADSIG E40DC434616730BD maemo.org Extras repositories (Fremantle Extras) <repositories@maemo.org>
W: GPG error: http://repository.maemo.org fremantle Release: The following signatures were invalid: NODATA 1 NODATA 2
W: GPG error: http://repository.maemo.org fremantle Release: The following signatures were invalid: NODATA 1 NODATA 2
W: Failed to fetch http://repository.maemo.org/extras-d...el/Packages.gz Sub-process gzip returned an error code (1)

W: Failed to fetch http://repository.maemo.org/extras-t...el/Packages.gz Sub-process gzip returned an error code (1)

E: Some index files failed to download, they have been ignored, or old ones used instead.