library problem ?

[Guillermo MORENO-SOCIAS]

   Hello.

   When trying to use portsnap I get:

# portsnap fetch
Looking up portsnap.FreeBSD.org mirrors... using portsnap1.FreeBSD.org.
Fetching public key... /libexec/ld-elf.so.1: /sbin/sha256: Undefined symbol "SHA256_File"
[: =: unexpected operator
key has incorrect hash.
# 

   The background is the following:  After installing a RELENG_5_4
(FreeBSD 5.4-RELEASE) kernel and updating my ports tree I installed a
RELENG_5 kernel (FreeBSD 5.5-PRERELEASE).  Because of a problem of
very slow network (which was not corrected by 5.5), I downgraded the
kernel to a RELENG_5_4_0_RELEASE applying the security patches (from
FreeBSD-SA-05:09.htt.asc to FreeBSD-SA-06:14.fpu.asc).

   Thanks in advance for your help.

                                      Guillermo Moreno-Socias