Description of problem:
Not exactly sure how to reproduce the problem.  I am doing quite a bit of heavy development that uses libvirt.  The libvirtd.log file prints out:

11:25:21.784: 24375: error : virNetServerDispatchNewClient:220 : Too many active clients (20), dropping connection from 127.0.0.1;0
11:25:23.926: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:23.926: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:23.926: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:23.926: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:23.926: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:23.926: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:23.935: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:41.648: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:41.648: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:41.648: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:41.648: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:41.648: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:41.648: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:41.648: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:41.648: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:41.655: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:41.656: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:41.656: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:25:41.656: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:33:39.736: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error
11:33:39.736: 24375: error : virNetSocketReadWire:912 : End of file while reading data: Input/output error

A second process is spawned by libvirt as well:
root     22049 24375  0 11:49 ?        00:00:00 libvirtd --daemon
root     22353 22671  0 11:58 pts/4    00:00:00 grep --color=auto libvirt
root     24375     1  2 11:00 ?        00:01:40 libvirtd --daemon

kill -9 of the non-init parented libvirt unsticks the system ie:
[root@beast libvirt]# kill -9 22049

Then things start working again.


Version-Release number of selected component (if applicable):
[root@beast libvirt]# rpm -qa | grep libvirt
libvirt-0.9.6-2.fc16.x86_64
libvirt-python-0.9.6-2.fc16.x86_64
libvirt-client-0.9.6-2.fc16.x86_64


How reproducible:
hard to reproduce

Steps to Reproduce:
1. execute vm starts/stops 
2.
3.
  
Actual results:
libvirt launches a second process and wedges

Expected results:
libvirt should not wedge

Additional info:

killing the second process unwedges libvirt