I purchased Avast solely because it claimed Grimefighter could make my computer run faster. I am running Windows 7. When I run Grimefighter (overnight), it goes through the entire process, then tells me it address my Boot Time, Responsiveness, or Disk Space issues. It tells me it has contacted technical support to resolve the problem. I have not heard from Tech Support. I still try the Grimefighter, and weeks later, it still doesn't work. What's even more frustrating, it turns on things in startup that I turned off. I have run the virus scan. No viruses. Again, the sole reason I purchased Avast! was for Grimefighter. HELP!