Description of problem:
Each time I use virt-manager to connect to distant hosts machines (outside my local network), when I close virt-manager, one of the theses 2 things may happen :
. this signal killed (often when using Quit)
or 
. python process remains running, using # 50% of CPU (this is the most probably ending)

So I use to kill this process

Actually I get an error when I connect to distant host, maybe this is related :
Erreur lors de l'obtention de la connexion « qemu:///system » : erreur interne client socket is closed

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/engine.py", line 295, in _tick
    conn.tick()
  File "/usr/share/virt-manager/virtManager/connection.py", line 1311, in tick
    self._tick(noStatsUpdate)
  File "/usr/share/virt-manager/virtManager/connection.py", line 1320, in _tick
    self.hostinfo = self.vmm.getInfo()
  File "/usr/lib/python2.7/site-packages/libvirt.py", line 3346, in getInfo
    if ret is None: raise libvirtError ('virNodeGetInfo() failed', conn=self)
libvirtError: erreur interne client socket is closed

Version-Release number of selected component:
virt-manager-0.9.4-4.fc18

Additional info:
backtrace_rating: 4
cmdline:        python /usr/share/virt-manager/virt-manager.py
crash_function: new_threadstate
executable:     /usr/bin/python2.7
kernel:         3.8.5-201.fc18.i686.PAE
uid:            1000
ureports_counter: 1
xsession_errors: /usr/lib/python2.7/site-packages/gnome_abrt/application.py:62: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 new_threadstate at /usr/src/debug/Python-2.7.3/Python/pystate.c:200
 #1 PyThreadState_New at /usr/src/debug/Python-2.7.3/Python/pystate.c:211
 #2 PyGILState_Ensure at /usr/src/debug/Python-2.7.3/Python/pystate.c:598
 #3 libvirt_virEventUpdateHandleFunc at libvirt-override.c:4634
 #4 virEventUpdateHandle at util/event.c:70
 #5 virNetSocketUpdateIOCallback at rpc/virnetsocket.c:1571
 #6 virNetClientIOUpdateCallback at rpc/virnetclient.c:1645
 #8 virNetClientIO at rpc/virnetclient.c:1799
 #9 virNetClientSendInternal at rpc/virnetclient.c:1969
 #10 virNetClientSendWithReply at rpc/virnetclient.c:1997