orca not reading some administration screens

[Pranav Lal]

Hi all,

I am running Ubuntu 7.04 in a virtual machine.  When I start orca, I find
that it does not read certain system administration screens.  For example,
if I try the menu item labelled "networks", I am able to enter my password
and, after that, orca does not read any text on the screen.  This is a
nuisance since I need to configure some of these settings.  

Any one any ideas on what could be happening?
Pranav