Antivir for Freebsd doesn't work on 5.X

[George Swentek <george () swentek mine nu>]

Antivir ( http://www.antivir.de/ ) - a popular antivirus scanner
doesn't work on local file system in Freebsd 5.X


The result from FreeBSD 4.9 system:
root@something:~$antivir -s  /var/log/
AntiVir / FreeBSD Version 2.1.0-9
Copyright (c) 1994-2004 by H+BEDV Datentechnik GmbH.
All rights reserved.
...
----- scan results -----
 directories:        2
       files:       14
      alerts:        0
   scan time: 00:00:01
------------------------
Thank you for using AntiVir.
Files are 14 and everything is OK.

The result from FreeBSD 5.1 system:
su-2.05b# antivir -s /var/log/
AntiVir / FreeBSD Version 2.1.0-9
Copyright (c) 1994-2004 by H+BEDV Datentechnik GmbH.
All rights reserved.
...
----- scan results -----
 directories:        1
       files:        0
      alerts:        0
   scan time: 00:00:01
------------------------
Thank you for using AntiVir.

Files are 0 and it seems that antivir doesn't recognize the files in the file system.I'v noticed this behaviour since 
the early 5.0 distribution. 

The strange thing about all this stuff is that antivir is working fine
on mounted file system, even it is FreeBSD 5.X on it, but still refuse to scan files mounted on / 


Regards,
George Swentek