Orca startup problem with brltty and orca

[Hermann <steppenwolf2 onlinehome de>]

Hi,
I use to startup brltty before logging into any terminal. I did this
by adding the following command:
update-rc.d brltty defaults
It works, but produces the following problem:
When logging out and in again in the graphicla terminal, Orca doesn't
restart braille, so i've to work with speech only.
When I start brltty manually after the log in signal comes, I can log
in and out several times, braille is always there.
The logging in and out in the text console is not restricted by the
startup method.
Any ideas?
Regards
Hermann