Problem (not http) with up2date/yum

[Clif Smith <fedora@xxxxxxxxxx>]

up2date was working as of Saturday night on 2 of my systems, but now all
I get on each is:

Traceback (most recent call last):
  File "/usr/sbin/up2date", line 22, in ?
    from up2date_client import repoDirector
  File "repoDirector.py", line 5, in ?
  File "rhnChannel.py", line 9, in ?
  File "up2dateAuth.py", line 5, in ?
  File "rpcServer.py", line 15, in ?
  File "/usr/lib/python2.2/socket.py", line 41, in ?
    from _socket import *
ImportError: /lib/libssl.so.4: undefined symbol: krb5_cc_get_principal

When I try <yum update> I get:
Traceback (most recent call last):
  File "/usr/bin/yum", line 22, in ?
    import yummain
  File "yummain.py", line 21, in ?
  File "clientStuff.py", line 25, in ?
  File "pkgaction.py", line 25, in ?
  File "rpmUtils.py", line 9, in ?
  File "urlgrabber.py", line 21, in ?
  File "/usr/lib/python2.2/urllib2.py", line 101, in ?
    import ftplib
  File "/usr/lib/python2.2/ftplib.py", line 68, in ?
    all_errors = (Error, socket.error, IOError, EOFError)
AttributeError: 'module' object has no attribute 'error'

I've reinstalled openssl, up2date, yum and python to no avail.

Any ideas?

Thanks, Clif