Description of problem:
RHPL emits a DeprecationWarning - "raising a string exception is deprecated".

-------------------------
[majain@localhost ~]$ neat
Bonobo accessibility support initialized
GTK Accessibility Module initialized

** (system-config-network:5866): WARNING **: AT_SPI_REGISTRY was not started at
session startup.

** (system-config-network:5866): WARNING **: IOR not set.

** (system-config-network:5866): WARNING **: Could not locate registry
/usr/lib/python2.5/site-packages/rhpl/Conf.py:275: DeprecationWarning: raising a
string exception is deprecated
  raise FileMissing, self.filename + ' does not exist.'
-------------------------

Version-Release number of selected component (if applicable):
rhpl-0.196-1

How reproducible:
Everytime

Steps to Reproduce:
Actually, the steps to reproduce can be a bit tricky... As shown in this bug
report, if your AR_SPI_REGISTRY gives an error, neat will show you the
deprecation warning. Try running "neat" from the console & you might get the
warning.
  
Actual results:
Deprecation warning

Expected results:
No warning

Additional info:
system-config-network-1.3.96-1.fc6
Adding katzj to the CC list (brew says rhpl is owned by katzj)