[orca-list] Orca seems to sometimes crash when exiting firefox

[Michael Whapples <mwhapples aim com>]

Hello,
I know this has been around for some time and because it only happens 
sometimes its been really hard to catch any information on why its 
happening. Anyway the problem is that sometimes when exiting firefox 
orca seems to lock up.

As doing full debugging is a bit costly (the files would get very big 
and I am not keen on the idea of having dbug going all the time as it 
possibly will show passwords) I decided to leave orca's debug level at 
its default and just have orca output to a file. Anyway the result of 
this is that I got the bug showing itself and this traceback turned up:

Traceback (most recent call last):
  File 
"/home/mike/orca-dev/orca-install/lib/python2.7/site-packages/orca/focus_tracking_presenter.py", 
line 986, in _dequeueEvent
    self._processObjectEvent(event)
  File 
"/home/mike/orca-dev/orca-install/lib/python2.7/site-packages/orca/focus_tracking_presenter.py", 
line 572, in _processObjectEvent
    if event.source == self.registry.getDesktop(0):
  File "/usr/lib/python2.7/site-packages/pyatspi/registry.py", line 
410, in getDesktop
    raise LookupError(e)
LookupError

focus_tracking_presenter:_dequeueEvent:  the event queue is empty!

Unfortunately as I didn't have full debugging going at the time I have 
no more information how orca got to this state. However I wonder, as 
other problems do seem to arise from LookupErrors, should orca be doing 
more in that block which catches these exceptions and try and get it 
back up on its feet rather than trying to account for each of these cases?

Michael Whapples