I've been upgrading from v51 to v54. I've followed the procedure on http://www.scientificlinux.org/documentation/howto/upgrade.5x which simply states: • yum clean all • rpm -Uvh ftp://ftp.scientificlinux.org/linux/scientific/5x/i386/misc/RPMS/yum-conf-latest.SL.noarch.rpm • yum update yum • yum update piece of cake. The procedure works fine on my i386 machines, but on the x68_64 machines the yum update fails with hundreds of errors that look like... ... file /usr/share/man/man3/strict.3pm.gz from install of perl-5.8.8-27.el5.x86_64 conflicts with file from package perl-5.8.8-10.el5_2.3.i386 file /usr/share/man/man3/utf8.3pm.gz from install of perl-5.8.8-27.el5.x86_64 conflicts with file from package perl-5.8.8-10.el5_2.3.i386 ... It looks like the upgrade is trying to move me from x86_64 to i386. is there a different yum-conf that I should be using? Help appreciated. -Andy