I installed ShadowDefender (SD) in my off-line snapshot without any problems to solve two problems : 1. FDISR has a few shortcomings : a. You can have only ONE frozen snapshot in FDISR. This means, I don't have an automated cleaning for my off-line snapshot, because my on-line snapshot is already frozen. b. FDISR's worst part are schedules and has only time-schedules and no demand schedules, like ShadowProtect. This means, I don't even have a half-automated cleaning for my off-line snapshot. So I have to do this manually. In other words I have to "work" and that is against my principles, because my computer has to "work" for me, not the other way. I do the brain work and my computer does the routine jobs as a digital slave. 2. My theoretical assumption is that each software, installed on my off-line snapshot, creates temporary objects (files + registries) to do something, but they don't remove these objects always after the job is done. The problem is that I don't always know, WHERE these temporary objects are stored and when I don't know, I cannot verify, if they are removed or not. The number of these objects increases every day and that becomes a serious problem sooner or later. For instance, my video-editing software creates at least two folders, that grow with minimum 4gb per editing job. After the job is completed, I don't need the contents of these two folders anymore, because the final output-file is stored on my DATA partition, but these folders are not emptied by the video-editing software itself. Of course I noticed this garbage immediately, because 4gb is alot, but what about the other softwares ? They create also garbage, that grows and grows. DVDShrink remembers each analyzed movie and I don't even know where it gets that information. Is it stored in a file or registry ? I don't know. That's the reason, why I need SD, because I don't like to know where the garbage of each individual software is stored, because I don't want to know, I just want to get rid of it. So I installed SD in my off-line snapshot and did a video-editing job, which I've done more than 150 times already, because I wanted to know two things : 1. Can I still do this job like I always did. 2. Are the two work folders, used by this software, EMPTY or not, AFTER the job. So, I activated ShadowMode in partition [C:] only and moved the "ShadowMode"-label, right above the system clock. SD remembers the position of the "ShadowMode"-label, even after reboot and the next "ShadowMode"-session and that's GOOD. Then I did the video-editing job like always and the final result was identical. I checked the two folders, while I was doing the job and both were full of garbage. Then I rebooted my computer with ShadowMode = ON and both folders were empty. I also tried the "Exit ShadowMode"-button, which requires a reboot and both folders were again empty. Keep in mind that this counts for any garbage-creating software, even when you don't know where the garbage is stored and that is for me an excellent solution without doing anything than reboot. No registry cleaning, no garbage cleaning, no need of refreshing with FDISR-archive anymore. I assume that Returnil can do the same job, but this thread is about ShadowDefender. The next step : installing SD on my on-line snapshot, which is much bigger job for SD of course. SD has to replace my Freeze Storage.arx, so that I don't need a frozen snapshot anymore. So far, I'm satisfied with SD. It's a very simple and logical software, BUT the story isn't finished yet. After all, this is my first contact with SD and I have to start simple. So my off-line snapshot is significantly improved : - it will always be clean with the same good working objects, that never change. - it will always have the same snapshot size - it will always have the same backup time/size and archive time/size.