Can clamwin remove backdoor.littlewitch virus? I have noticed that when I run clamwin I get messages saying access denied. Are these because the system has the file or what? Also when the backdoor virus message notification appears fron amother virus checker it also says acccess denied. Is there any relation between the two. I did manage to delete a backdoor virus but shortly after that it appeared again in another file. Any way to get rid of all of them?