First off, thanks in advance for your help. I run windows 7 x64 and am considering adding returnil as part of my layered security model alongside Comodo Firewall and Defense+, avira 10 personal, sandboxie, prevx and immunet. I do not believe I should experience any problems with any of these programs. I do currently have acronis true image 2010 installed and wonder if that would conflict with or fail to work properly with returnil. Additionally, I am curious as to differences between the x64 and x32 versions of Returnil. I am rather dismayed at the reduced secrurity of my other products due to PatchGuard. I saw a reply from someone from returnil in another thread (coldmoon, I believe) that said there was no effect on x64 due to PatchGuard. I am wondering how Returnil operates so effectively in x64. I would appreciate it of you could provide some details on how returnil maintains such an absolute level of protection without patching the kernel. How does it enforce the system-wide virtualization? I use an ssd in this machine so am concerned with the amount of writes done to the drive. Does returnil amplify the amount of data written to the drive as compared to a normal system? A rather simple question: how easy is it to commit changes to the actual drive and what protections are in place to prevent malware exploiting this and committing changes to the drive? Is there a toggle switch which unconditionally prevents all changes to the drive until after a reboot? Such an option would be wonderful to switch on before performing an unsafe activity such as web broswing and completely guarantee the integrity of the system. My final question is that of performance. I play recent, system intensive games. How does returnil affect performance? Not disk performance, which I am not overly concerned about, but CPU and graphics performance? I am rather ignorant of the means by which returnil and similar products operate and hope to be enlightened. Thanks for your time.