I installed Google Earth and it is basically working, but the letters are choppy.
Why are the letters choppy?
I had the same problem when I first installed Google Earth, but it was at about the same time as I installed Ubuntu 11.04. So I installed fonts from the Ubuntu Software Center, including and especially the installer for the Microsoft TrueType fonts. The next time I restarted the computer, it worked just fine. I can't tell you exactly which font worked, but it seems that one of them did.
I think this post has your answer!
Anyway, just to reiterate, open up your terminal, by using your dash search, then copy-paste the following:
You should need to enter your password. When its done installing, type in
Go to "Fonts" tab.
Go to "Point Size".
Click on the dropdown menu. Change "9" for "14". (or whatever is comfortable for you)
Navigate the the menu FILE > SAVE.
Navigate the the menu FILE > EXIT.
There, it should work!