iView with Height Type AUTOMATIC

Hi

I have a Portal page with a 3 URL iViews. The iViews' Height Type is set to AUTOMATIC. When the page is displayed, all the iViews has the same height (150px). I've set the minium and maximum automatic height values as well, but they seem to be ignored. The iViews always have the 150px height. Any suggestions would be helpfull please.