Same error here after upgrading from Squeeze to Wheezy Date: Tue, 27 Sep 2011 07:16:06 +0300 (EEST) From: root <root@lrdlnx.iki.fi> To: root at lrdlnx.iki.fi Subject: [rkhunter] lrdlnx.iki.fi - Daily report Warning: The command '/usr/bin/rkhunter' has been replaced and is not a script: /usr/bin/rkhunter: POSIX shell script, ASCII text executable