I am managing a network with 7 PCs (XP) and a server (2003 SBS) on a domain. All are running eEye Blink AV. The issue is that on a single machine the hosts file disappeared a few months ago which was rebuilt. I went to block Lizamoon.com this weekend and noticed that another machine was missing its hosts file. My boss wants me to find out why this is happening. Both machines are scanned for malware regularly and none of the user accounts have rights to modify the file. I searched on Google and only found info on rebuilding the file, not reasons for it. Anyone out there come across this and the reason for it besides malware?