Trouble installing Google Earth

[sideburns]

My sister and I have been trying to install Google Earth on her Ubuntu computer using this set of instructions: http://linuxforums.org.uk/index.php?topic=10397.0 We're using them instead of just downloading and installing the .deb file because this way, she gets updates as well. Alas, when she tries to do the update, she gets this:

W: GPG error: http://us.archive.ubuntu.com precise Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W: GPG error: http://dl.google.com stable Release: The following signatures were invalid: BADSIG A040830F7FAC5991 Google, Inc. Linux Package Signing Key <linux-packages-keymaster@google.com>

Of course, we didn't try the actual install after that. Does anybody know what's going on, or how we can get that repo properly installed?

[oldos2er]

See http://www.ubuntugeek.com/how-to-fix...or-badsig.html

If I'm not mistaken, when you install Google Earth by downloading and double-clicking the *.deb file, it will set up its repository automatically so you will receive updates.