i am facing the problem of Zlib during installtion of ISP-conf.

[nasir]

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!
ERROR: Could not configure ClamAV
cd: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
mv: cannot stat `binaries/aps.tar.

[till]

Please have a look at this thread.

http://www.howtoforge.com/forums/showthread.php?t=302