/etc/openldap/slapd.conf is missing an include for misc.schema which causes ldapadd to choke upon encountering the first entry from migrate_aliases.pl when running migrate_all_offline.pl.
Fedora Core 3 is now maintained by the Fedora Legacy project for security updates only. If this problem is a security issue, please reopen and reassign to the Fedora Legacy product. If it is not a security issue and hasn't been resolved in the current FC5 updates or in the FC6 test release, reopen and change the version to match. Thank you!
Still reproducible with openldap-servers-2.3.30-2.fc6.
Fixed in openldap-2.3.34-3.fc8