Hi, I am a recent switcher and have been quite happy with my iMac running Leopard. I am having a problem with safari recently: When I visit one the the websites from Safari, the page was only displayed the upper half of it and I suppose I need to use the scroll bar on the right side to scroll the page down, but in fact none was showing. I tried to used the wheel of my mouse to do the scroll down but also unsuccessful. Could someone please explain this?