I have a wireless internet connection and whenever i use it for chatting only something is downloading in the background coz using chat doesn't eats up that MB of bandwidth. In 5 min it shows 5 MB download in the receive/sent connection icon. How can i see where the download is taking place. I have even turned off automatic updates too. Using Windows XP firewall also on and Norton antivirus didn't also found out nothing malwares,so did spybot. Should i be switching to Private connection when logging to the net using the wireless connection? My system also restarts abnormally.should i reinstall xp again.