The current layout
very consistently falls apart in css-compatible browsers (IE 5.0, Opera 5, Mozilla 1.0) as soon as the longest word in the side columns starts to "push up" the column width designated in the stylesheet. The longest word is currently
LunuxJournal.com in the lower right box. As soon as the width of browser window is reduced to 500-700 pixels, it starts to push away the side of that box in all these browsers, no matter what it's pushing it over :)
With table layout, this bug wouldn't happen. First, the browser will redistribute the column width. When the longest words will be pushing all columns, a horizontal scroll bar will appear.