Dynamic textfields show differently in MACs?

Whats up :beer:

I got a really strange issue for you guys. At least for me it was crazy to find out. I work with flash (in PCs) since 1999 and I just met this situation today.

I got some dynamic textfields in my flash movie loading html-formatted text. it works fine.

but my boss tried it out in a Macintosh and sent me a screenshot where I could see that there is a shorter distance between the lines and a shorter distance between the characters.

How can this be? Macromedia claims that Flash looks the same in all platforms.

thats the movie: http://www.antoniobrandao.com/mg/

Anyone of you guys know if there is a work-around?

thanks :s: