Printing a barcode font no longer works properly

Question

I have been using a true type font "3 of 9 barcode" to print mailing labels on an internal website using the following css for some time:
.barcode { font-family: "3 of 9 Barcode", Times, serif; font-size:36px; }
After upgrading to Firefox 5 it stopped working. This currently renders the font correctly on the page but when I try to print the page it uses Wingdings. This is happening on multiple computers and multiple printers. The font is installed on all the computers and I've even tried using @font-face with no success.
[http://www.thomaspainerants.com/firefox_barcode_works.png Screenshot of Firefox properly rendering the barcdoe font.]
[http://www.thomaspainerants.com/firefox_barcode_broken.png What happens when I try to print]. In this case I printed to PDF but the same thing happens when printing to a normal printer. Printing in the latest versions of Chrome & IE9 works properly though not in Safari.
[http://www.thomaspainerants.com/3_OF_9_BARCODE.TTF 3 of 9 Barcode font]

Answer 1

Abandon all hope yee who enter this thread. Abandon hope for mozilla fixing the issue that is. I went with a jQuery based bmp generator. It's pretty easy to implement and has worked well for me.
download: http://code.google.com/p/jquery-barcode/downloads/detail?name=jquery.barcode.0.3.js&can=2&q=
demo : http://jquery-barcode.googlecode.com/svn/trunk/jquery-barcode/demo/demo.html
Implementation:
Put these includes in your header:
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"></script>
<script type="text/javascript" src="js/jquery.barcode.0.3.js"></script>
Everything that needs to be a barcode should have the same class. I chose "barcode39".
<span class="barcode39">405479</span>
<span class="barcode39">405339</span>
<span class="barcode39">405341</span>
Then run this script at the bottom:
<script>
$('.barcode39') .barcode({code:'code39'});
</script>