[CentOS] Nmap update checksum failures.

Exhausted mirrors and had the following errors.

(2/10): nmap-frontend-4.0 100% |=========================|  29 kB
00:00
http://apt.sw.be/redhat/el4/en/i386/dag/RPMS/nmap-
frontend-4.01-1.2.el4.rf.i386.rpm: [Errno -1] Package does not match
checksum
Trying other mirror.
(3/10): libpng-devel-1.2. 100% |=========================| 169 kB
00:00
(4/10): nmap-4.01-1.2.el4 100% |=========================| 746 kB
00:01
http://apt.sw.be/redhat/el4/en/i386/dag/RPMS/nmap-4.01-1.2.el4.rf.i386.rpm: [Errno -1] Package does not match checksum
Trying other mirror.

Do I need to add some mirrors to these defaults? Or just be patient?

TIA
Bill
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