How is this possible. I'm very confident that my machine is clean. Been running ESS for some time now and NOD-32 before that. Was just upgrading from the latest version of ESS v4 to the latest of ESS v5. Install went fine. Rebooted and when I came back into Windows it was gone! Win 7 was asking me to enable it as it gave it as an option but after selecting it (via the solve PC issues in the task bar) it would never clear the message. I started looking around and found remnants of v4. Which I had completely uninstalled and ran CCleaner before and after reboot before installing v5. Reinstalling v5 now. What is up? Running Win 7 64bit Pro with 8Gb of RAM.