Oh, and after it's all done, when rpm looks like it's permanently broken with errors like this: # rpm --rebuilddb rpmdb: Program version 4.2 doesn't match environment version error: db4 error(22) from dbenv->open: Invalid argument error: cannot open Packages index # The solution is: # cd /var/lib/rpm # rm __* # rpm --rebuilddb Thank heavens for Google, and that pasting error messages into it is the fastest way to get help. -- Penelope Fudd <centos@xxxxxxxxxx>