brltty.conf is altered

[Sérgio Neves]

Hi,
I have ubuntu 7.04 installed on my laptop and brltty and this issue arises
whichever version of brltty is installed (3.7.2 or 3.8).
I edit the /etc/brltty.conf file to put my preferences, for example, my
braille table.
When I restart the machine, brltty.conf is changed to a default which I
don't know what, and I lost the changes I have made.
The first line of /etc/brltty.conf is:
# Created by /lib/brltty/brltty.sh
What does it mean and what is the best way to stop changing the brltty.conf
automatically on machine's restart?

Thanks

Best regards

Sérgio Neves