Error in Update Manager

[gordong11]

Hi , all.

BTW this is my first Ubuntu install in a few years, I"m in love, so I'm somewhat of a noob.

I'm getting this error when I run the update manager(9.04). Can anyone help me solve this issue?
Attached is the screenshot. Thanks

[gordong11]

Solved on my own via terminal enties below:

1. gpg --keyserver subkeys.pgp.net --recv 6AF0E1940624A220


2. gpg --export --armor 6AF0E1940624A220 | sudo apt-key add - (both on same entry line, only got message "OK")

3. sudo apt-get update


I hope I did the right thing, I no longer get the error, but I hate doing stuff I know little about.