anyone encounter this problem?

$ sudo PYTHONPATH=src ./src/kimchid --host "0.0.0.0" --port 8000

Loading YumUpdate features.
Loaded plugins: langpacks, refresh-packagekit
[16/Apr/2014:13:47:33] ENGINE Bus STARTING
[16/Apr/2014:13:47:33] ENGINE Started monitor thread 'Autoreloader'.
[16/Apr/2014:13:47:33] ENGINE Started monitor thread '_TimeoutMonitor'.
[16/Apr/2014:13:47:33] ENGINE Serving on 0.0.0.0:8001
[16/Apr/2014:13:47:33] ENGINE Serving on 0.0.0.0:8000
*** Running feature tests ***
127.0.0.1 - - [16/Apr/2014:13:47:34] "HEAD /images/icon-fedora.png HTTP/1.1" 200 4449 "" ""
127.0.0.1 - - [16/Apr/2014:13:47:34] "GET /images/icon-fedora.png HTTP/1.1" 206 4449 "" ""
127.0.0.1 - - [16/Apr/2014:13:47:34] "HEAD /images/icon-fedora.png HTTP/1.1" 200 4449 "" ""
WebSocket server settings:
- Listen on :64667
- Flash security policy server
- No SSL/TLS support (no cert file)
- proxying from :64667 to targets in /var/lib/kimchi/vnc-tokens

*** Feature tests completed ***
[16/Apr/2014:13:47:40] ENGINE Bus STARTED
libvirt: XML-RPC error : Cannot write data: Broken pipe
Connection to libvirt broken. Recycling. ecode: 38 edom: 7
Exception in thread Thread-2:
Traceback (most recent call last):
File "/usr/lib64/python2.7/threading.py", line 811, in __bootstrap_inner
self.run()
File "/usr/lib/python2.7/site-packages/cherrypy/process/plugins.py", line 475, in run
self.function(*self.args, **self.kwargs)
File "/home/shhfeng/work/workdir/kimchi/src/kimchi/model/vms.py", line 66, in _update_guests_stats
vm_list = self.get_list()
File "/home/shhfeng/work/workdir/kimchi/src/kimchi/model/vms.py", line 221, in get_list
return self.get_vms(self.conn)
File "/home/shhfeng/work/workdir/kimchi/src/kimchi/model/vms.py", line 226, in get_vms
names = [dom.name().decode('utf-8') for dom in conn.listAllDomains(0)]
File "/home/shhfeng/work/workdir/kimchi/src/kimchi/model/libvirtconnection.py", line 62, in wrapper
ret = f(*args, **kwargs)
File "/usr/lib64/python2.7/site-packages/libvirt.py", line 4038, in listAllDomains
raise libvirtError("virConnectListAllDomains() failed", conn=self)
libvirtError: Cannot write data: Broken pipe