After an OSX software update, Live doesn't start correctly anymore.
If you do not change your computer's components or reformat your hard drive, you should not need to authorize/unlock Live again.
After the Live 8 installation, the presets in Live 7 are no longer working. Error message text: “The preset cannot be loaded. It's probably broken”.
Selecting 'Check for Updates' from Live's 'Help' menu results in an error message from the OS or doesn't work.