I found the free 72 hr giveaway of Returnil Pro yesterday and downloaded it. No problem with the download and it ran well without any configuration - for about an hour. Then, it began uninstalling itself along with some other things in my operating system. No logs are available on this Dell Inspiron, Vista HP, all current updates, 1.8 Intel Dual Core and 2G RAM. The OS was nearly unusable. I had to re-install my OS and programs via an external backup that I use. I've never had anything like it happen before, or heard of anything like it. The PC was clean according to MBAM and Hitman Pro prior to the install, which came from Dottech.org. Returnil performed a scan when it was first installed which also showed as clean. Again, it was the weirdest thing I've ever had happen.