Some users are experiencing an issue in Finder where files will not open when double-clicked. After upgrading to Snow Leopard these users report that they experience the problem intermittently.

Windows Sandbox may fail to start with “ERROR_FILE_NOT_FOUND (0x80070002)” – Especially on devices in which the operating system language is changed during the update process.

Until then, it’s best that you don’t open any ICO files using GIMP. This is true whether you’re on the newer 3.x version of GIMP or the older 2.x version. If you are still using GIMP 2.x ...