]$ antivir -s -z /home
AntiVir / Linux Version 2.0.8-18
Copyright (c) 1994-2003 by H+BEDV Datentechnik GmbH.
All rights reserved.
error (211): program file of AntiVir has been modified"
NOTE: I usually run antivir manually as user (not root).
I wonder if prelink has modified the executable? ... if not, this is VERY disquieting!
It was probably modified by prelink. Check /etc/prelink.conf for a list of directories that prelink will examine.
You can either disable prelink to fix the problem, or make sure "antivir" is in a directly not listed. /usr/local, for instance, should be good.