Comment 81 for bug 742544

No problem.

If you ever want to revert to the original Unity, a command (something like) this should work:

sudo apt-get install unity/oneiric unity-common/oneiric libunity-core-4.0-4/oneiric unity-services/oneiric

After the first updates are released for unity in 11.10, you can then change /oneiric to /oneiric-updates to revert back to the latest official update version.