I noticed that in the Progress Bar Demo of SwingSet2, if you continuously alternate between pressing the Start Loading Text button and the Stop Loading Text button, the text that is printed in the text area becomes very corrupted and weird looking. This happens with NT4, RedHat6.1, and Solx86 8, but not on Solaris Sparc 8. I don't know if it's a problem with the demo, Swing, painting events, or what. Probably not a big deal, but strange nontheless.