Hi, I bought this computer with Windows 7 since about 8 months. Within the last two months ago, shutdown process has become very slow. It's take 1-2 minutes every time. Startup time seems normal. I have now licensed kaspersky Internet Security and Comodo free Firewall (Does this affect?) The operating system updates have automatically installing since the beginning of my use. Most of my use is surfing the Internet and web design programs. Asus A52F with 3gb memory.