I've never had such a tough time getting rid of a bug but I'm due for my dose of humility. I've got a Windows 7 Pro 64 workstation that was infected with something. Another tech spent several hours on it and cleaned it up. A few weeks later, the user complained about everything running slow. After looking at the TSKMGR I saw that explorer.exe starts a second one and increases memory use until there's only 3 or 4% available. I can end task on it but it starts up again a few minutes later. This happens in safe mode as well as normal mode. I've run Malwarebytes. It doesn't find anything. I've run combofix, it deletes a few things. I've run Superantispyware and it doesn't find anything. I've run their AV, NOD32 and it doesn't find anything but explorer.exe just takes off. I'm to the point of just reloading everything as that's what I've seen others having the same issue have ended up doing. Has anyone had any success in solving this problem? Thanks!