Hello! stupid question, but I installed on five machines SL5.1 64bit last week. The hardware is identical Dell1950, the memory and disk also. The os the package version everything is the same, but when I made md5sum /usr/bin/md5sum I get 5 different results: beac2942ffa5f274652a9a782782276d 2464a77a126d761c188b9fae7497be9b aa89f01557e14e0ea6ef8ca6dd11b732 a3845105f2252d418548e9cdf3231766 cf12c39f723d9759946d72db955da002 and also on other sl5.1/64bit machines installed before with different hardware I always get different results. and why is rpm -V coreutils not complaining??? regards! sven