key problems

["Marco Banterle" <fumpyz@gmail.com>]

hi,

first of all thanks for all the good work you're doing.


i can easly install packages from your backport but i'm having problem with the public key.

this is the output from  wget -O - 
http://backports.org/debian/archive.key | apt-key add -

gpg: can't open `/etc/apt/trusted.gpg'
gpg: keydb_get_keyblock failed: eof
gpg: no writable keyring found: eof
gpg: error reading `-': general error
gpg: import from `-' failed: general error

how can i resolve this? 

thanks
Marco