Issue

• when attempting to run rhn_check from a Proxy client, seeing error like the following:

# rhn_check
An error has occurred:
Internal Server Error
See /var/log/up2date for more information

• Traceback errors in /var/log/httpd/error_log on the Proxy server

    Exception Handler Information
    Traceback (most recent call last):
      File "/usr/share/rhn/proxy/apacheServer.py", line 66, in __call__
        ret = f(req)
      File "/usr/share/rhn/proxy/apacheHandler.py", line 349, in handler
        ret = handlerObj.handler()
      File "/usr/share/rhn/proxy/broker/rhnBroker.py", line 180, in handler
        authToken = self.proxyAuth.check_cached_token()
      File "/usr/share/rhn/proxy/rhnProxyAuth.py", line 117, in check_cached_token
        oldToken = self.get_cached_token()
      File "/usr/share/rhn/proxy/rhnProxyAuth.py", line 134, in get_cached_token
        return shelf[key]
      File "/usr/share/rhn/proxy/rhnProxyAuth.py", line 386, in __getitem__
        val = rhnCache.get(rkey, missing_is_null=0)
      File "/usr/share/rhn/common/rhnCache.py", line 78, in get
        return cache.get(name, modified)
      File "/usr/share/rhn/common/rhnCache.py", line 354, in get
        return cPickle.loads(pickled)
    EOFError

• rhn_check returns error 500 on client registered with Red Hat Proxy.