hosts

File hosts is malware or can be infected by malware:
CWS.XPlugin Hijacker, CiD.Help Adware, Covesmer Trojan, Hostblock Trojan, Zlob.Fam Trojan
You must run antivirus software as soon as posible to check you computer.

Download ExterminateIt! to instantly get rid of malware!

Also Be Aware of this dangerous files:

Also Be Aware of the Following Threats:
SurfAccuracyUpdater Downloader Removal
AceNotes.Free Adware Removal instruction