What screen resolution are you using? Flat screen LED/LCD monitor? Wide screen? Or an old CRT monitor below 19"?? If you are running less that 1030 pixels horizontal resolution the vast majority of today's webpages are too wide and a horizontal scrollbar will appear; IOW, the pages are too wide for 1030 pixel width. You can zoom out to get the whole page width fit the screen, but the text might be too small to read comfortably.