If you go to the Google Earth Download page you can download a minor update to Google Earth 4. It includes fixes to minor bugs with mostly uncommon computer configurations. No new features. Version numbers for the new version are:
- Windows – Version 4.0.2737
- Mac – Version 4.0.2736
- Linux – Version 4.0.2735
One bug fix noted was to “Default to DirectX on Vista on first run due to poor OpenGL support“.