Hello, Since Sunday, my computer has suddenly become very slow. When I try to start up Firefox, it now takes around 2 minutes, while before Sunday it would start up in a couple of seconds. Everything has just become very slow. I don't think I'm infected because I've ran SUPERAntiSpyware, Malwarebytes' Anti-Malware, Hitman Pro 3.5.0, NOD32 and an online virus scanner. Hitman Pro 3.5.0 found one Trojan, and got rid of it. Sometimes it takes long to load everything and the icons on my desktop just keep flashing as if it keep loading it. Explorer.exe is also on top with processes taking CPU, and after that comes System Idle processes. Hopefully someone can help me because it's really annoying. Thanks in advance.