you know bala... since the introduction of windows 91 i became a fan of windows.... got my win95, win 98 win2000 and xp till now with my vista ultimate.... windows is a great os for me personally. but then i started experiencing an attack of worms, viruses, trojan etc., etc....and my pc geek friend informed me that these originated from windows itself or its biz partners etc, etc.... its a hassle for the users especially when your important files are on stake.... so my friend advised me to use mac if i don't want such kind of inconvenience.... and it's worthy!