Home computers, one laptop (IBM Thinkpad R52), one desktop (Athlon XP 1600+/512M DDR333/80G+40G), both has been working fine. But things begin to change after I replaced NOD32 v2.7 with ESS beta 1 a suite. Three days ago the laptop kept freezing upon hitting enter key after entering my user password. I could see neither the mouse cursor nor the screen saying "loading user settings". Then I pressed Ctrl+Del+Alt, but no response at all. Nothing worked unless I forcefully pressed the power button to restart the laptop. But today the freezing problem not only occurred for three times on the laptop, but also occurred on the desktop. It really annoys me. Any idea what is going on?