This error still seems to be there. When you reinstall it, it says the keys are ok, but when you run sudo apt-get update, it doesn't go away.
sudo apt-get --reinstall install ubuntu-extras-keyring
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 0B/3,424B of archives.
After this operation, 0B of additional disk space will be used.
(Reading database ... 122384 files and directories currently installed.)
Preparing to replace ubuntu-extras-keyring 2010.09.27 (using .../ubuntu-extras-keyring_2010.09.27_all.deb) ...
Unpacking replacement ubuntu-extras-keyring ...
Setting up ubuntu-extras-keyring (2010.09.27) ...
Importing extras.ubuntu.com keyring
OK
Processing extras.ubuntu.com removal keyring
OK
This error still seems to be there. When you reinstall it, it says the keys are ok, but when you run sudo apt-get update, it doesn't go away.
sudo apt-get --reinstall install ubuntu- extras- keyring extras- keyring 2010.09.27 (using .../ubuntu- extras- keyring_ 2010.09. 27_all. deb) ... extras- keyring ... extras- keyring (2010.09.27) ...
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 0B/3,424B of archives.
After this operation, 0B of additional disk space will be used.
(Reading database ... 122384 files and directories currently installed.)
Preparing to replace ubuntu-
Unpacking replacement ubuntu-
Setting up ubuntu-
Importing extras.ubuntu.com keyring
OK
Processing extras.ubuntu.com removal keyring
OK
sudo apt-get update archive. canonical. com maverick Release.gpg archive. canonical. com/ubuntu/ maverick/partner Translation-en archive. canonical. com/ubuntu/ maverick/partner Translation-en_US extras. ubuntu. com maverick Release.gpg [316B] extras. ubuntu. com/ubuntu/ maverick/main Translation-en extras. ubuntu. com/ubuntu/ maverick/main Translation-en_US security. ubuntu. com maverick-security Release.gpg security. ubuntu. com/ubuntu/ maverick- security/ main Translation-en us.archive. ubuntu. com maverick Release.gpg us.archive. ubuntu. com/ubuntu/ maverick/main Translation-en archive. canonical. com maverick Release us.archive. ubuntu. com/ubuntu/ maverick/main Translation-en_US us.archive. ubuntu. com/ubuntu/ maverick/multiverse Translation-en us.archive. ubuntu. com/ubuntu/ maverick/multiverse Translation-en_US us.archive. ubuntu. com/ubuntu/ maverick/restricted Translation-en us.archive. ubuntu. com/ubuntu/ maverick/restricted Translation-en_US us.archive. ubuntu. com/ubuntu/ maverick/universe Translation-en us.archive. ubuntu. com/ubuntu/ maverick/universe Translation-en_US us.archive. ubuntu. com maverick-updates Release.gpg extras. ubuntu. com maverick Release [57.3kB] security. ubuntu. com/ubuntu/ maverick- security/ main Translation-en_US security. ubuntu. com/ubuntu/ maverick- security/ multiverse Translation-en security. ubuntu. com/ubuntu/ maverick- security/ multiverse Translation-en_US security. ubuntu. com/ubuntu/ maverick- security/ restricted Translation-en security. ubuntu. com/ubuntu/ maverick- security/ restricted Translation-en_US security. ubuntu. com/ubuntu/ maverick- security/ universe Translation-en security. ubuntu. com/ubuntu/ maverick- security/ universe Translation-en_US extras. ubuntu. com maverick Release security. ubuntu. com maverick-security Release us.archive. ubuntu. com/ubuntu/ maverick- updates/ main Translation-en us.archive. ubuntu. com/ubuntu/ maverick- updates/ main Translation-en_US us.archive. ubuntu. com/ubuntu/ maverick- updates/ multiverse Translation-en us.archive. ubuntu. com/ubuntu/ maverick- updates/ multiverse Translation-en_US archive. canonical. com maverick/partner i386 Packages extras. ubuntu. com maverick/main i386 Packages/DiffIndex security. ubuntu. com maverick- security/ main i386 Packages us.archive. ubuntu. com/ubuntu/ maverick- updates/ restricted Translation-en us.archive. ubuntu. com/ubuntu/ maverick- updates/ restricted Translation-en_US us.archive. ubuntu. com/ubuntu/ maverick- updates/ universe Translation-en us.archive. ubuntu. com/ubuntu/ maverick- updates/ universe Translation-en_US us.archive. ubuntu. com maverick-backports Release.gpg us.archive. ubuntu. com/ubuntu/ maverick- backports/ main Translation-en extras. ubuntu. com maverick/main i386 Packages us.archive. ubuntu. com/ubuntu/ maverick- backports/ main Translation-en_US us.archive. ubuntu. com/ubuntu/ maverick- backports/ multiverse Translation-en security. ubuntu. com maverick- security/ restricted i386 Packages security. ubuntu. com maverick- security/ universe i386 Packages security. ubuntu. com maverick- security/ multiverse i386 Packages us.archive. ubuntu. com/ubuntu/ maverick- backports/ multiverse Translation-en_US us.archive. ubuntu. com/ubuntu/ maverick- backports/ restricted Translation-en us.archive. ubuntu. com/ubuntu/ maverick- backports/ restricted Translation-en_US us.archive. ubuntu. com/ubuntu/ maverick- backports/ universe Translation-en us.archive. ubuntu. com/ubuntu/ maverick- backports/ universe Translation-en_US us.archive. ubuntu. com maverick Release us.archive. ubuntu. com maverick-updates Release us.archive. ubuntu. com maverick-backports Release us.archive. ubuntu. com maverick/main i386 Packages us.archive. ubuntu. com maverick/restricted i386 Packages us.archive. ubuntu. com maverick/universe i386 Packages us.archive. ubuntu. com maverick/multiverse i386 Packages us.archive. ubuntu. com maverick- updates/ main i386 Packages us.archive. ubuntu. com maverick- updates/ restricted i386 Packages us.archive. ubuntu. com maverick- updates/ universe i386 Packages us.archive. ubuntu. com maverick- updates/ multiverse i386 Packages us.archive. ubuntu. com maverick- backports/ main i386 Packages us.archive. ubuntu. com maverick- backports/ restricted i386 Packages us.archive. ubuntu. com maverick- backports/ universe i386 Packages us.archive. ubuntu. com maverick- backports/ multiverse i386 Packages extras. ubuntu. com maverick Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY DB141E2302FDF932
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Fetched 317B in 1s (273B/s)
Reading package lists... Done
W: GPG error: http://
I suspect that the key was changed and the package maintainer for ubuntu- extras- keyring forgot to update it.