I'm just about to update ClamAV to v0.86 on a CentOS4 box having successfully done this on a 3.3 box but... configure: error: The installed zlib version may contain a security bug. Please upgrade to 1.2.2 or later: http://www.zlib.net. You can omit this check with --disable-zlib-vcheck but DO NOT REPORT any stability issues then! Any expected probs with me doing this update from the site - I have tried with yum (including Dag's repository) and it finds no updates. Ta NK