Scrolling and firefox

I have searched forum, and havent fount solution to my problem.

I am using Vaadin and Firefox 3.5, but the scrolling of UI (layout, tables) does not work, in IE when i press the scrolling button, the scroll icon appears and everything works as expected, but not in FF 3.5.
Is it a bug in Vaadin (6.0.1) or FF, or am i doing something wrong in my code?


Pavel Micka