Did you embed your fonts?
I just went through something similar making a clock... it worked in windows but not on my linux machines.
After a wild goose chase trying to find out what was wrong with my code, I figured out I had forgotten to embed the fonts.
i can take a look at your project if you want. im by no means an expert, but i work extensively with linux (ubuntu) systems. does it work on windows but not unix? have you checked your publish setting (ie- flash player 7 or 8)?