MAAS 1.7b7 probe-and-enlist-hardware causes cluster to stop working, it reregisters after about 10 minutes

Trying to recreate this bug enlisting SeaMicro SM15K on MAAS 1.7b7. We are trying to enlist the 64 nodes on a SM15K chassis into a MAAS 1.7b7 cluster. The following is what happens. Initially it seemed that the cluster completely died, but this time I let it sit while I was gathering bits from logs and noticed that after about 10 minutes, the cluster recovered and re-registered itself. BUT for 10 minutes or so, it was unusable and non-responsive.

Also during this time, the MAAS Dashboard was very, VERY sluggish, I presume because django was doing something to query data from the cluster controller and having to wait on that.

ubuntu@utsa-maas:/var/log/maas$ maas demo node-group probe-and-enlist-hardware -d $uuid model=seamicro15k username=admin password=seamicro mac=00:21:53:12:ad:00 power_control=restapi2
200 OK

   Content-Length: 0
     Content-Type: text/html; charset=utf-8
             Date: Thu, 23 Oct 2014 15:23:36 GMT
           Server: Apache/2.4.7 (Ubuntu)
           Status: 200
             Vary: Authorization,Cookie
  X-Frame-Options: SAMEORIGIN

After running the above, if I go to the MAAS UI and click on a different tab, for example, the clusters tab if you're already on the nodes tab, the UI stops responding.

in maas-django.log the only things I see are these ERROR entries every hour:
ERROR 2014-10-23 01:09:51,386 twisted {}
ERROR 2014-10-23 02:09:51,805 twisted {}
ERROR 2014-10-23 03:09:51,278 twisted {}
ERROR 2014-10-23 04:09:51,400 twisted {}
ERROR 2014-10-23 05:09:51,588 twisted {}
ERROR 2014-10-23 06:09:51,310 twisted {}
ERROR 2014-10-23 07:09:51,406 twisted {}
ERROR 2014-10-23 08:09:51,387 twisted {}
ERROR 2014-10-23 09:09:51,368 twisted {}
ERROR 2014-10-23 10:09:51,444 twisted {}

in maas.log, I see this:
ubuntu@utsa-maas:/var/log/maas$ date
Thu Oct 23 10:31:29 CDT 2014
ubuntu@utsa-maas:/var/log/maas$ tail maas.log
Oct 23 09:29:50 utsa-maas maas.import-images: [INFO] Finished importing boot images, the region does not have any new images.
Oct 23 09:49:50 utsa-maas maas.import-images: [INFO] Started importing boot images.
Oct 23 09:49:50 utsa-maas maas.import-images: [INFO] Finished importing boot images, the region does not have any new images.
Oct 23 10:09:49 utsa-maas maas.bootresources: [INFO] Started importing of boot resources.
Oct 23 10:09:50 utsa-maas maas.import-images: [INFO] Started importing boot images.
Oct 23 10:09:50 utsa-maas maas.import-images: [INFO] Finished importing boot images, the region does not have any new images.
Oct 23 10:09:51 utsa-maas maas.bootresources: [INFO] Finished importing of boot resources.
Oct 23 10:09:51 utsa-maas maas.import-images: [INFO] Started importing boot images.
Oct 23 10:09:51 utsa-maas maas.import-images: [INFO] Finished importing boot images, the region does not have any new images.
Oct 23 10:23:36 utsa-maas maas.drivers.seamicro: [INFO] Probing for seamicro15k nodes with arguments ip=192.168.1.98, username=admin, password=seamicro, power_control=restapi2

Note that those maas.import-iages messages appear every 20 minutes on the 9 until I try the SeaMicro import. At that point, the maas.import-images messages stop happening, even though there should have been another set at 10:29 (see the date output above before I tail the log).

in pserv.log this is what I find. Note that there are NO entries for today, 2014-10-23 until a few minutes after I ran the probe-and-enlist-hardware command:
2014-10-22 18:13:40-0500 [Uninitialized] Event-loop utsa-maas:pid=73139 (10.241.1.193:40705): Connection was refused by other side: 111: Connection re
fused.
2014-10-22 18:13:40-0500 [Uninitialized] Event-loop utsa-maas:pid=73139 (10.241.1.193:40705): Connection was refused by other side: 111: Connection re
fused.
2014-10-23 10:32:20-0500 [ClusterClient,client] Unhandled Error
        Traceback (most recent call last):
          File "/usr/lib/python2.7/dist-packages/twisted/protocols/amp.py", line 889, in _commandReceived
            deferred = self.dispatchCommand(box)
          File "/usr/lib/python2.7/dist-packages/twisted/protocols/amp.py", line 946, in dispatchCommand
            return maybeDeferred(responder, box)
          File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 139, in maybeDeferred
            result = f(*args, **kw)
          File "/usr/lib/python2.7/dist-packages/twisted/protocols/amp.py", line 1035, in doit
            return maybeDeferred(aCallable, **kw).addCallback(
        --- <exception caught here> ---
          File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 139, in maybeDeferred
            result = f(*args, **kw)
          File "/usr/lib/python2.7/dist-packages/provisioningserver/rpc/clusterservice.py", line 360, in add_seamicro15k
            power_control=power_control)
          File "/usr/lib/python2.7/dist-packages/provisioningserver/drivers/hardware/seamicro.py", line 279, in probe_seamicro15k_and_enlist
            servers = find_seamicro15k_servers(ip, username, password, power_control)
          File "/usr/lib/python2.7/dist-packages/provisioningserver/drivers/hardware/seamicro.py", line 266, in find_seamicro15k_servers
            servers = get_seamicro15k_servers(version, ip, username, password)
          File "/usr/lib/python2.7/dist-packages/provisioningserver/drivers/hardware/seamicro.py", line 242, in get_seamicro15k_servers
            for server in api.servers.list():
          File "/usr/lib/python2.7/dist-packages/seamicroclient/v2/servers.py", line 77, in list
            return self._list("/servers")
          File "/usr/lib/python2.7/dist-packages/seamicroclient/base.py", line 53, in _list
            _resp, body = self.api.client.get(url)
          File "/usr/lib/python2.7/dist-packages/seamicroclient/client.py", line 173, in get
            return self._cs_request(url, 'GET', **kwargs)
          File "/usr/lib/python2.7/dist-packages/seamicroclient/client.py", line 158, in _cs_request
            method,**kwargs)
          File "/usr/lib/python2.7/dist-packages/seamicroclient/client.py", line 140, in _time_request
            resp, body = self.request(url, method, **kwargs)
          File "/usr/lib/python2.7/dist-packages/seamicroclient/client.py", line 114, in request
            **kwargs)
          File "/usr/lib/python2.7/dist-packages/requests/api.py", line 44, in request
            return session.request(method=method, url=url, **kwargs)
          File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 455, in request
            resp = self.send(prep, **send_kwargs)
          File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 558, in send
            r = adapter.send(request, **kwargs)
          File "/usr/lib/python2.7/dist-packages/requests/adapters.py", line 378, in send
            raise ConnectionError(e)
        requests.exceptions.ConnectionError: HTTPConnectionPool(host='192.168.1.98', port=80): Max retries exceeded with url: /v2.0/servers?username=admin&password=seamicro?username=admin&password=seamicro?username=admin&password=seamicro?username=admin&password=seamicro (Caused by <class 'socket.error'>: [Errno 110] Connection timed out)

2014-10-23 10:32:20-0500 [ClusterClient,client] ClusterClient connection lost (HOST:IPv4Address(TCP, '127.0.0.1', 39950) PEER:IPv4Address(TCP, u'127.0.0.1', 53349))
2014-10-23 10:32:20-0500 [ClusterClient,client] ClusterClient connection lost (HOST:IPv4Address(TCP, '127.0.0.1', 39950) PEER:IPv4Address(TCP, u'127.0.0.1', 53349))
2014-10-23 10:32:20-0500 [ClusterClient,client] Unhandled Error
        Traceback (most recent call last):
        Failure: twisted.internet.error.ConnectionDone: Connection was closed cleanly.

2014-10-23 10:32:20-0500 [ClusterClient,client] Unhandled Error
        Traceback (most recent call last):
        Failure: twisted.internet.error.ConnectionDone: Connection was closed cleanly.

2014-10-23 10:32:20-0500 [ClusterClient,client] Logged OOPS id OOPS-5ceee5f9016c8211b16f7f3d0d2971e6: ConnectionError: HTTPConnectionPool(host='192.168.1.98', port=80): Max retries exceeded with url: /v2.0/servers?username=admin&password=seamicro?username=admin&password=seamicro?username=admin&password=seamicro?username=admin&password=seamicro (Caused by <class 'socket.error'>: [Errno 110] Connection timed out)
2014-10-23 10:32:20-0500 [ClusterClient,client] Logged OOPS id OOPS-039edc75bbdcf4324aab4656d3e4959a: ConnectionDone: Connection was closed cleanly.
2014-10-23 10:32:20-0500 [ClusterClient,client] Logged OOPS id OOPS-da0710da830b08f4777a03ace32371f5: ConnectionDone: Connection was closed cleanly.
2014-10-23 10:32:20-0500 [Uninitialized] ClusterClient connection established (HOST:IPv4Address(TCP, '127.0.0.1', 51622) PEER:IPv4Address(TCP, u'127.0.0.1', 53349))
2014-10-23 10:32:20-0500 [Uninitialized] ClusterClient connection established (HOST:IPv4Address(TCP, '127.0.0.1', 51622) PEER:IPv4Address(TCP, u'127.0.0.1', 53349))
2014-10-23 10:32:20-0500 [ClusterClient,client] Event-loop 'utsa-maas:pid=73967' authenticated.
2014-10-23 10:32:20-0500 [ClusterClient,client] Event-loop 'utsa-maas:pid=73967' authenticated.
2014-10-23 10:32:20-0500 [ClusterClient,client] Cluster 'd98d9d2f-20cd-4f78-b081-e92f47dc002a' registered (via utsa-maas:pid=73967).
2014-10-23 10:32:20-0500 [ClusterClient,client] Cluster 'd98d9d2f-20cd-4f78-b081-e92f47dc002a' registered (via utsa-maas:pid=73967).

It does seem that the cluster DID recover finally, though it was unresponsive for about 10 minutes. Note the last to pserv entries. the cluster was unregistered or unresponsive for about 10 minutes, then it re-registered and became active again.