Mine

libvir: QEMU error : 
libvir: QEMU error : 
libvir: Remote error : socket closed unexpectedly
--xml--
<domain type='qemu'>
  <name>asdf11</name>
  <currentMemory>524288</currentMemory>
  <memory>524288</memory>
  <uuid>82215966-db9a-d42b-516d-40ffc690fcc3</uuid>
  <os>
    <type>hvm</type>
    <kernel>/var/tmp/virtinst-vmlinuz.khRslv</kernel>
    <initrd>/var/tmp/virtinst-initrd.img.jWa5Qv</initrd>
    <cmdline>ks=http://172.16.57.21/cblr/kickstarts/c5-i386/ks.cfg ksdevice=eth0 lang=  text syslog=172.16.57.21:25150  method=http://mdehaan.rdu.redhat.com/cblr/links/c5-i386</cmdline>
  </os>
  <features>
    <apic/><acpi/><pae/>
  </features>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>destroy</on_reboot>
  <on_crash>destroy</on_crash>
  <vcpu>1</vcpu>
  <devices>
    <console device='pty'/>
    <disk type='file' device='disk'>
      <source file='/opt/qemu/asdf11'/>
      <target dev='hda'/>
    </disk>

    <interface type='user'>
      <mac address='00:16:3e:6b:b2:7a'/>
    </interface>


  </devices>
</domain>

Traceback (most recent call last):
  File "app.py", line 128, in main
    k.run()
  File "app.py", line 216, in run
    self.virt()
  File "app.py", line 391, in virt
    return self.net_install(after_download)
  File "app.py", line 350, in net_install
    after_download(self, profile_data)
  File "app.py", line 389, in after_download
    self.virt_net_install(profile_data)
  File "app.py", line 722, in virt_net_install
    profile_data  =  profile_data
  File "/cg/koan/koan/qcreate.py", line 143, in start_install
    guest.start_install()
  File "/usr/lib/python2.5/site-packages/virtinst/Guest.py", line 710, in start_install
    return self._do_install(consolecb, meter)
  File "/usr/lib/python2.5/site-packages/virtinst/Guest.py", line 727, in _do_install
    self.domain = self.conn.createLinux(install_xml, 0)
  File "/usr/lib/python2.5/site-packages/libvirt.py", line 524, in createLinux
    raise libvirtError('virDomainCreateLinux() failed', conn=self)
libvirtError: virDomainCreateLinux() failed socket closed unexpectedly
libvir: Remote error : Broken pipe