Test 6 if GD fails - see the two images linked below
http://callisto.firemirror.com/test.out.6.png
http://callisto.firemirror.com/test.new.6.png
Basically the fonts are slightly different.
Let me know if you need more information about the system (which I
suspect will be needed but i'm not sure what)
(P.s sorry for the innefectual bug report)