This is good news:
Final Cut Pro X v10.1.1:
Preserves media files if an ext. drive or network is disconnected while consolidating a library
Resolves an issue with loading audio content in the Music and Sound Browser
Fixes a stability issue when applying a Motion effect with Scroll Text behavior
Faster switching between proxy media and original or optimized media
Improves Timeline responsiveness with very large projects
Before installing an update to Final Cut Pro X from the Mac App Store, be sure to have a backup of your important files, including Projects, Events, and the version of Final Cut Pro X that you're updating.
I especially like that second one regarding audio content.
Final Cut Pro X v10.1.1:
Preserves media files if an ext. drive or network is disconnected while consolidating a library
Resolves an issue with loading audio content in the Music and Sound Browser
Fixes a stability issue when applying a Motion effect with Scroll Text behavior
Faster switching between proxy media and original or optimized media
Improves Timeline responsiveness with very large projects
Before installing an update to Final Cut Pro X from the Mac App Store, be sure to have a backup of your important files, including Projects, Events, and the version of Final Cut Pro X that you're updating.
I especially like that second one regarding audio content.