Deep Freeze is a GREAT product. No Middle or High School should be without it! We've saved hours of troublesome service calls because teachers can fix their own computer problems by simply rebooting. I installed Deep Freeze on my most troublesome computers in the labs and libraries. Since then, I have not had a single service call on any of them.Just imagine having all the computers in a lab set up identically and no way for the students to alter the settings. This has helped our teaching staff a great deal. When the teacher gives a demonstration, the rest of the computers always have the exact same settings and there is much less confusion trying to find options that have been disabled. Deep Freeze - I wouldn't run a computer lab without it!