java freezes my computer and requires a hard reboot

I have been getting semi-frequent freezes when running Java apps through NetBeans 6.9.1. As soon as netbeans would finish compiling my app and then start to run it, my pc would freeze, i could still move my mouse and mp3s would still play in the background but i couldn't interact with anything on the screen at all, not even windows icons and the task bar. No ctrl+alt+delete, nothing. And if i kept clicking the mouse around 5 or so times trying to get the system to respond, my mouse would also stop responding.

For a while it seemed like cleaning and rebuilding through netbeans once per startup would fix the problem, but then it happened independent of this.

More importantly, i have got just today for the first time been able to reproduce the freeze by launching a java app outside of Netbeans, through a .bat file.

If anyone has any suggestions on resolving this issue i would much appreciate it.

When i reproduced the freeze outside of the ide i was running javaw and java's version info is: java version "1.6.0_20" Java(TM) SE Runtime Environment (build 1.6.0_20-b02)开发者_开发知识库 Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode

the problem is also independed of the java app i'm running.

Seriously, some Java-related system lockups are related to graphics acceleration driver issues. Try launching your Java app with 2D acceleration disabled.