Having used this product for 3 months now, some issues have poked their heads up, so I am passing this along.

First, if there is a problem attaching to the destination drive you will never know it. The software returns with a "Slot Synced" message. My backup drive, while connected, was not recognized by Windows, and a quick look at My Computer confirmed this. The only way I knew there was a problem was that the sync finished quicker than I counted on. A definite bug.

The second problem comes when restoring files. While the software is bright enough to recognize that a file it is about to restore is being used (pop-up window alert), it isn't capable of picking up after you respond to the alert. As a result, any files after the "busy" file aren't restored. I copied my "Documents and Settings" folder, which includes some system files, when I tried to restore FileMyster just stopped at the file, threw an alert, then appeared to continue syncing, only the file counter provided evidence that nothing was really happening. Another definite bug.