Well I often bump into this issue..
I'm doing a simple "margin-top: 10px;" on my class ".case_title". The issue im looking at is, that with firefox no margin is done, in IE it is..

Guess i'm doing something wrong in my setup, but just can't point out what?

Feel free to take a look here:
http://www.loungebb.com/port/portfolio.html

the class ".case_title" contains the text : CARLHEUSER on the page..