Has anyone else had this problem? I have tried other mirrors and still to the same effect. Resolving Dependencies --> Populating transaction set with selected packages. Please wait. ---> Downloading header for nmap to pack into transaction set. nmap-4.01-1.2.el4.rf.i386 100% |=========================| 5.3 kB 00:00 ---> Package nmap.i386 2:4.01-1.2.el4.rf set to be updated --> Running transaction check Dependencies Resolved Transaction Listing: Update: nmap.i386 2:4.01-1.2.el4.rf - dag Total download size: 746 k Is this ok [y/N]: y Downloading Packages: (1/1): nmap-4.01-1.2.el4. 100% |=========================| 746 kB 00:00 http://apt.sw.be/redhat/el4/en/i386/dag/RPMS/nmap-4.01-1.2.el4.rf.i386.rpm: [Errno -1] Package does not match checksum Trying other mirror. Error Downloading Packages: nmap - 2:4.01-1.2.el4.rf.i386: failure: RPMS/nmap-4.01-1.2.el4.rf.i386.rpm from dag: [Errno 256] No more mirrors to try. Thanks Peter K