The most common virus at the moment on computer systems is the Anti Virus 2009. This is a virus that tries mimik a anti virus software. It will inform you that your system is infected. However the only infection is this software which harasses you to purchase thier removal tools.
This usually ends up on a system after you’ve downloaded a video or mp3 from somewhere like limewire. You click the file to open, it asks you to install a codec or somthing similar. Then bang! You now have a virus on your system.
I am currently selling lean mean anti virus software for £25. This is Kaspersky 3 user license software which can be used on 3 machines. PC World are selling Kaspersky however it is £25 for only one license.
Give me a call if your in in your city and want anti virus software up-to-date.