Hi, all!

I have a problem regarding updating my Lubuntu 12.04.

When I do a

sudo apt-get update

I get these errors at the bottom of the output

W: Failed to fetch http://ppa.launchpad.net/gnomenu-tea...source/Sources 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/gnomenu-tea...-i386/Packages 404 Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.

I'm not sure what these are, and how to "rebuild" my repository-list with the correct adresses.

Also, I sometimes get error-messages of the same sort when I use the GUI updater.

Lastly, how do I check that I indeed have the latest version of OpenJDK?
Output of

sudo apt-get install openjdk-7-jre

tells me I have the latest version, but I'm not sure.

Any help would be greatly appreciated!=)

Best regards,