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Possible Duplicate:
What is the easiest way to resolve apt-get BADSIG GPG errors?
Unable to load lucid partner packages from

When I run:

apt-get update

I get this error:

"W: GPG error: oneiric Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key "

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marked as duplicate by Jorge Castro, hhlp, fossfreedom, Lekensteyn, Takkat Oct 14 '11 at 11:09

This question was marked as an exact duplicate of an existing question.

I got that today too, and used

sudo aptitude -o Acquire::http::No-Cache=True -o Acquire::BrokenProxy=true update ; sudo apt-get update

from -

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The fixes on the duplicate didn't fix the error on my machine, I had to do use aptitude. – Falk Oct 14 '11 at 12:15
not works for me – pylover Mar 11 '13 at 21:07

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