Orca Stability issues with 2.17.3

[Hermann <steppenwolf2 onlinehome de>]

Hi,
as the subject tells, there are some stability issues I encountered with 
the latest Orca.
Orca often crashes when an error message appears.
This error message can be caused by Gnome-Session manager, Open Office 
or Nautilus.
In the case of Gnome-Session manager it happens when I opened the main 
menu by pressing Alt+f1. OO crashes when I closed a document, and 
Nautilus opened an error message when I tried to change the owner of a 
file, so that I was able to copy it from my notebook (Windows XP) to my 
desktop computer (Ubuntu 6.10).
In all cases I had to restart Orca, and then I could see the error 
message. After the problem with Nautilus Orca only showed the startup 
dmessage, and then I couldn't navigate at all; I had to restart my computer.
Since this happens with Orca 2.17.3 I guess this is a stability problem.
Does anyone have similar experience?
Regards
Hermann