Good day, I am having a serious problem with my computer slowing down and my mouse is not responsive (left click). I began by running the 8 step process Symptoms: 1.) The mouse is VERY slow to respond. I click on an icon, and nothing happens. I click a link in my web browser (Firefox or IE) and nothing happens. I have to click 7,8 or 9 times before it will register. 2.) The computer is MUCH slower than it used to be. (This is true for almost all programs.) 3.) Trying to register a "Big Fish Game" and it instantly fails. By far the most annoying is the slow mouse. I have been able to "temporary" fix it by opening a command prompt, killing explorer.exe, and then restarting explorer.exe via the command prompt. I have attached all of the requested information here. I would appreciate ANY ideas. I believe it is a virus or other problem, as a friend (who I Skype with and share files with) is having a similar problem. As an alternative theory, I am using a wireless mouse (Microsoft Wireless Optical Mouse 2.0). I have replaced the batteries multiple times and reinstalled the software. I have turned off system restore. I have done everything that I can think of. I REALLY noticed this problem after I installed service pack 3. Could this be the problem, and if so, how do I fix it? Thank you for your help!