Thank you. >if you are using i386 - upgrade to Final/Release. This time, I chose a fresh install of Version 4.0, available from CentOS-4.0-i386-bin1of4.iso 629640 KB 2005-02-27 CentOS-4.0-i386-bin2of4.iso 651234 KB 2005-02-27 CentOS-4.0-i386-bin3of4.iso 649558 KB 2005-02-27 CentOS-4.0-i386-bin4of4.iso 232380 KB 2005-02-27 A following message appeared: # yum install apt ................ Transaction Listing: Install: apt.i386 0:0.5.15cnc6-1.1.centos4 - extras Total download size: 2.1 M Is this ok [y/N]: y Downloading Packages: warning: rpmts_HdrFromFdno: V3 DSA signature: NOKEY, key ID 4fe06303 public key not available for apt-0.5.15cnc6-1.1.centos4.i386.rpm Regards.