Blue-Screen on Firefox-ed VISTA

Windows Vista Home Premium is installed on my VGN-FZ180E. I installed Mozilla Firefox on it. After a restart, when I logged into my account, I saw BLUE-SCREEN page problem with TCPIP.SYS file to load! My VAIO restarted again!!! ... Finally I could solve this problem by removing Mozilla Firefox. I don't know why Firefox installation is related to this fatal error, but I think it's a intentional bug in VISTA not to use any browsers except Internet Explorer (IE)!