My computer was infected by " snapdo.com" and it took 48 hours and $129 to (hopefully) clear it. It appears by a pop up that informs you that your Java has to be updated to the latest version in order to view the page you are on. It even appeared on this site today . Then if you click to download the Java update, boom, snapdo.com starts to download and it won't let you cancel the download. Afterwards it also freezes your mouse and you can't delete the program under the computers program files. My internet provider worked on it for two days and that's who charged the $129 but I also signed up for a subscription which costs $10 a month for future infections to get tech support.