BADSIG 85A3D26506C4AE2A

[Alexey Khmara]

Hello.

Doing aptitude update I receive this error:

W: A error occurred during the signature verification. The repository is not
updated and the previous index files will be used. GPG error: 
http:// mozilla.debian.net squeeze-backports Release: 
The following signatures were invalid: BADSIG 85A3D26506C4AE2A 
Debian Mozilla team APT archive <pkg-mozilla-maintainers at lists.alioth.debian.org>

Releted line in /etc/apt/souces.list:

deb http://mozilla.debian.net/ squeeze-backports iceweasel-aurora

I opened doenloaded Release file in text editor - it appears to be good. I do not
use proxies. I tried to do aptitude update using another network connection (by
ssh sock proxy), so it's not something in network altering this file.

How to resolve this?