Java SE 6 update 1 swing apps run slow

When I first installed JDK6/JRE SE 6, Netbeans 5.5 and 6 (M9) ran beautifully. All GUI Java applications were quite responsive, and I never noticed a speed issue. However, last week Netbeans started running slowly. You could practically see the entire screen being repainted from top to bottom over the course of a second or two. Naturally, this gets quite annoying when attempting to write code since everytime I scroll, I have to wait a second for the screen to repaint itself. At first I thought this was just a Netbeans issue, but I notice that every other Java GUI app also repaints very slowly. I've been trying to think back as to what could possibly have changed in my system to cause things to run slowly, but can't think of anything.
I tried reinstalling the JDK and JRE (as well as Netbeans), but it does not seem to have fixed the issue. The reason I'm posting this under the Swing forum is because I suspect this is a Swing issue -- applications that I have written that do not utilize a GUI seem to run at the same speed as before.
Any suggestions as to what might be causing this slowness?

could it freezing be related to my delay in updating it ?
Message was edited by: Sheepo39

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