Hello all, I may have solved this: I removed /etc/rpm/platform: rm /etc/rpm/platform
confirmed that rpm recognized that I had x86_64 arch: rpm -E '%{_arch}' x86_64 and then reinstalled python: yum install python.x86_64 After doing a couple more installs of the x86_64 bit versions of some pam and nss modules I was able to get back to working order. There are probably some other things that may need to be fixed, but yum update isn't showing a whole bunch of i386 packages anymore :) For the record, I did an upgrade with a CD from i386 SL 5.4 to SL 5.7 x86_64. Upon rebooting, yum would insist I had 386 arch, and the authentication method I had was failing (it was looking for 64 bit versions of the pam modules and nss modules). Christopher Tooley ctoo...@uvic.ca Systems, HEP/Astronomy UVic On 2011-09-23, at 4:23 PM, Christopher Tooley wrote: > Hello, > > What is the procedure for upgrading from 32bit to 64bit? I did an upgrade > with the CD but now I have authentication failing because it's looking for > the 64bit versions of nss_ldap and can't find them - so I think I may have > missed a step. > ----------------------------------------------------------------------- > [root@<host> ~]# cat /etc/redhat-release > Scientific Linux SL release 5.7 (Boron) > [root@<host> ~]# grep basearch * > [root@<host> ~]# rpm --eval '%{_arch}' > i386 > [root@<host> ~]# uname -ar > Linux <host> 2.6.18-274.el5 #1 SMP Thu Jul 21 12:13:11 EDT 2011 x86_64 x86_64 > x86_64 GNU/Linux > [root@<host> ~]# > ----------------------------------------------------------------------- > > > Christopher Tooley > ctoo...@uvic.ca > Systems, HEP/Astronomy UVic