I compared the font in Java 2D demo with open jdk6 & 1.6.0 b104 build & observed that in open jdk build the font is not rendered properly.

Step to reproduce :-
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1) Run Java2D demo with the open-jdk6 build.
2) Select Font tab.
3) Select "demo.fonts.AttributedStr" tab & observe that circle is not rendered correct ,portion of the circle towards right is cut. I have attached the screenshot of the same.
4) Select "demo.Font.Hightlighting" tab & observe that font Java2D,in which the character "J" is rendered outside the rectangle box. I have attached the screenshot of the same.
5) Select "demo.Fonts.Outline" tab & observe that first character "A" & last character "g" portion is cut off. & also there is an extra line is drawn on character "U" is string "Attributed".
If see all the above issues then bug is reproduced.

I compared it with jdk1.6.0 b104 build. Platform i used to test is Ubuntu 7.10.