Why does Groupboard run so slowly on Mac OSX 10.4, especially flood fill?
There is a bug in the Mac OSX 10.4 version of java which causes drawing operations to off-screen buffers to be 200 times slower than drawing to the screen. To fix the problem, just add this to your java runtime parameters (in Utilities->Java->J2SE 5.0->Java Preferences.app): -Dapple.awt.graphics.UseQuartz=false This bug does not occur on OSX 10.6.