We use PP5, but as Ron said backing up to an external hard drive is a standard option for PastPerfect. In fact, it will notify you every time you try to close the program without doing it. If you are having problems, I would go to the Past Perfect Website and make sure there haven’t been any recent updates. I know that with PP5, they put out an almost monthly update that often fixes any issues and bugs that often tend to be the root of the problem (at least the ones we had).
I also fully agree with everyone about their tech support team. They are so very friendly and patient.
Is there a specific problem you are having that maybe we could help with? I know that if you don’t have a tech support package, the cost of a one time tech support call can seem expensive.