Lion upgrade and superdrive

after loading lion the superdrive does not recognize any of my dvds even though with snow leopard there was no problem.

To fix this problem,
1. Open Terminal.
2. Copy and paste this code:
sudo rm /private/var/db/mds/system/mds.install.lock
3. Reboot computer. (If hangs reboot again)
4. Fixed! Enjoy!
Its an easy fix that Apple should include in their next update

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