This little utility has saved my A$$ on more than one occasion. When ever a client calls me up and is having strange things happening with their Mac I automatically suggest running Onyx and at 8 out 10 times it will fix the problem. It is like the miracle tonic for OS X. I highly suggest using this product and donating to the programmers. Shoot Apple should pay them. The only one thing I wish it had was the ability to run it as a non admin using admin credentials.