This may not sound like a big deal but the PC speaker appears to no
longer work using the ZCM10 boot CD (June 09 version).

So if I type ...
echo -en "\a"
.... or ...
echo -en "\007"
.... I don't hear a little beep.

As part of our work practices we use shell scripts that run imaging
commands and then beep at the end to alert the helpdesk staff that the
work has been completed. It my sound mighty irritating but it proves to
be very useful.

I have done the following ...
echo -en "\e[11;100]"
echo -en "\e[11;0]"
.... on another box and have succeeded in turning the sound on and off
that way but when I do this on the latest boot CD it has no affect.