Something's leaking file descriptor.

Leaving redhat-config-network running on the desktop for about an hour, with
eight devices, results in the following crash dialog popping up, urging me to
bugzilla itself:

Traceback (most recent call last):
  File "/usr/sbin/neat", line 774, in update_devicelist
  File "/usr/bin/../share/redhat-config-network/netconfpkg/Control.py", line 63,
in __init__
  File "/usr/bin/../share/redhat-config-network/netconfpkg/Control.py", line 66,
in load
OSError: Too many open files