Action Script running slow on MAC?

I have Flash Mx 2004 Professional and I am using a PC. I exported the whole project, I wrote it on a cd and gave it to another person who’s using a Mac. The project has a lot of action script generated transitions/ movement. On his computer all the transitions are very very slow. We tested the project on both IE and Safari Mac browsers and the whole flash is not running smoothly
Anyone of you knows why actionscrip might running so slow on Mac, or even some links with related articles? anyone met the same problem?

http://www.carteletelefonice.com/dan_test/

If you are using a mac can you please visit the link above and notice me if it’s running ok or not…

I’m somehow desperate…

Thank you very much…