GPG error when apt-get update

[franam@hierax.net (Francesco Namuri)]

hi,

when i execute "apt-get update" twice the first time I not have any problem, the second time
I got: "W: GPG error: http://ftp.it.debian.org testing Release: Unknown error executing gpgv"

any ideas?

I check for the key of the mirror, it's in my keyring...

thanks in advance and sorry for my english... :)

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