Searching for something similar to ShadowUser for Vista has now led me to try Returnil after having mixed feelings about DeepFreeze. I ought to mention that the problems I encountered with DeepFreeze were related to the fact that my computer wouldn't hibernate in 'THAWED STATE' (normal state). With Returnil things looked promising insofar as it allowed the computer to hibernate in normal state although recovery was chaotic (I should have suspected then, something could go very wrong). Disaster struck 2 nights ago when oblivious I was in 'frozen state' with Returnil, my computer entered the hibernate state alright, but never woke from it. I mean trying to restart it was giving me an endless loop of black screens asking to try the last working configuration, the various safe mode booting possibilities that I could invoke in emergency situations. Needless to say nothing would unblock this kind of sudden death. Well then, let's try ShadowProtect and its recovery CD: The CD started loading it's info, and I thought great in 10 minutes I'm back in business... The moment the restore wizard was about to start, a nice blue screen of death (how appropriate in this case) appeared, and I surrendered. Pretty humiliating if you ask me to go back to the shop to get advice, after spending more than two years at Wilders to learn how to cope with this kind of emergencies. What happened I was told, the partition table got corrupted and even the Windows Vista reinstall CD would blue screen when trying to reinstall. The bottom line: I personally will never ever touch the 'hibernate' function having a sandbox application installed whether it is in frozen or thawed state. I also think that I will most likely buy DeepFreeze even though Returnil can't be judged on this alone, it was not pleasant at all what I experienced.