OK its happened again!
only this time "dpkg --clear-avail" does not fix the problem.
here is what happens when i try and run. "apt-get update"


~ $ sudo gainroot
Root shell enabled


BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso30+0m5) built-in shell (ash)
Enter 'help' for a list of built-in commands.

/home/user # dpkg --clear-avail
/home/user # apt-get update
Hit http://repository.maemo.org fremantle Release.gpg
Ign http://repository.maemo.org fremantle/free Translation-en_GB
Ign http://repository.maemo.org fremantle/non-free Translation-en_GB
Get:1 http://repository.maemo.org fremantle Release.gpg [489B]
Ign http://repository.maemo.org fremantle/free Translation-en_GB
Ign http://repository.maemo.org fremantle/non-free Translation-en_GB
Hit http://repository.maemo.org fremantle Release.gpg
Ign http://repository.maemo.org fremantle/free Translation-en_GB
Ign http://repository.maemo.org fremantle/non-free Translation-en_GB
Hit http://repository.maemo.org fremantle Release
Hit http://repository.maemo.org fremantle Release
Hit https://downloads.maemo.nokia.com ./ Release.gpg
Hit http://repository.maemo.org fremantle Release
Ign http://repository.maemo.org fremantle/free Packages/DiffIndex
Ign http://repository.maemo.org fremantle/non-free Packages/DiffIndex
Get:2 http://repository.maemo.org fremantle Release [8265B]
Ign http://repository.maemo.org fremantle/free Packages/DiffIndex
Ign http://repository.maemo.org fremantle/non-free Packages/DiffIndex
Hit http://repository.maemo.org fremantle/free Packages
Ign https://downloads.maemo.nokia.com ./ Translation-en_GB
Ign http://repository.maemo.org fremantle Release
Hit http://repository.maemo.org fremantle/non-free Packages
Hit http://repository.maemo.org fremantle/free Packages
Hit https://downloads.maemo.nokia.com ./ Release.gpg
Hit http://repository.maemo.org fremantle/non-free Packages
Ign https://downloads.maemo.nokia.com ./ Translation-en_GB
Ign http://repository.maemo.org fremantle/free Packages/DiffIndex
Ign http://repository.maemo.org fremantle/non-free Packages/DiffIndex
Hit http://repository.maemo.org fremantle/free Packages
Hit https://downloads.maemo.nokia.com ./ Release.gpg
Hit http://repository.maemo.org fremantle/non-free Packages
Ign https://downloads.maemo.nokia.com ./ Translation-en_GB
Hit https://downloads.maemo.nokia.com ./ Release
Hit https://downloads.maemo.nokia.com ./ Release
Hit https://downloads.maemo.nokia.com ./ Release
Ign https://downloads.maemo.nokia.com ./ Packages/DiffIndex
Ign https://downloads.maemo.nokia.com ./ Packages/DiffIndex
Hit https://downloads.maemo.nokia.com ./ Packages
Ign https://downloads.maemo.nokia.com ./ Packages/DiffIndex
Hit https://downloads.maemo.nokia.com ./ Packages
Hit https://downloads.maemo.nokia.com ./ Packages
Fetched 8754B in 4s (1780B/s)
Reading package lists... Done
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: You may want to run apt-get update to correct these problems
/home/user #