That annoying horizontal scrollbar problem with javadocs ?
http://developer.java.sun.com/developer/bugParade/bugs/4852280.html I especially loved this part:
When Internet Explorer displays a frameset document, if one of the
frames has too much vertical content to fit in its space on the screen,
as expected, a vertical scrollbar appears. Unfortunately, IE considers
the rectangular area *behind* the scrollbar as space for text layout.
The result is that the document lays out behind the scroll bar, and in
a stunning example of doublethink, IE then says "Whoops, the layout is
running off the right side of the page" and also displays a horizontal
scrollbar. Even resizing the frame manually won't get rid of the horizontal
scrollbar (as long as the document still wants more vertical space than
is available to it).