[BRLTTY] Startup problem with brltty under Ubuntu together with Orca

[Hermann]

Hi Dave,
I send a list of all files containing the word "brltty":

./etc/rcS.d/S25brltty -> /sbin/brltty
./etc/init.d/brltty
./etc/brltty
./lib/brltty
./usr/share/doc/brltty
./usr/share/lintian/overrides/brltty
./usr/share/doc-base/brltty
./usr/share/omf/brltty
./sbin/brltty

When i enterr
update-rc.d brltty defaults
I get the following:

System startup links for /etc/init.d/brltty already exist.

What's the matter with that S25 link, it was added by the system, but
brltty doesn't start up automatically, unless I add that mentioned S20
link.
btw. There's no runlevel.conf and no inittab in Ubuntu.
Regards
Hermann