(forgot to update unbound.conf)
    Fri Apr 02 2010 Paul Wouters <paul@xelerance.com> - 1.4.3-2
    - Updated unbound.conf with new options
    - Enabled pre-fetching DNSKEY records (DNSSEC speedup)
    - Enabled re-fetching popular records before they expire
    - Enabled logging of DNSSEC validation errors