Scroll bar diasapears

Hello everybody in the forums.

It has been a while since i entered kirupa.

Today I have encountered a very anoying problem on a site i’m working on.
I have this movie that stands on a single timeline. on the "home " frame label i have dynamic text box with scrollbar component.
after going to any other frame labels the scroll works fine, but if i go to a frame label called contacts, where i have a external swf form loading and go back to home, the scroll bar disapears.

Anyone on this problem?
Fla available by email.
Greatings from Portugal and thanks for any help on this.