Fixing GPG Keys in UBUNTU

NOTE: Your hexadecimal numbers may be different then mine, so make sure to use the hexadecimals numbers in your error, not mine.

W: GPG error: http://ppa.launchpad.net jaunty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6D975C4791E7EE5E
W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used.GPG error: http://ppa.launchpad.net jaunty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5A9BF3BB4E5E17B5

W: GPG error: http://ppa.launchpad.net jaunty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7FB8BEE0A1F196A8
W: Failed to fetch http://ppa.launchpad.net/chromium-da...jaunty/Release
W: Some index files failed to download, they have been ignored, or old ones used instead.

The fix for this is to re-download the keys using the hexidecimal numbers given in the error .
Type this command into the terminal ("Applications > Accessories > Terminal" OR press "Ctrl-Alt-Del")
Code:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys

And then add the hexadecimal numbers to the command (again, these are my keys from my error. Make sure to use your own):

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 6D975C4791E7EE5E 5A9BF3BB4E5E17B5 7FB8BEE0A1F196A8


The output should look like this:

"gpg: requesting key 437D05B5 from hkp server keyserver.ubuntu.com"


NOTE: Your hexadecimal numbers may be different then mine, so make sure to use the hexadecimals numbers in your error, not mine.











http://ubuntuforums.org/showthread.php?t=1221323