JDK 6 on Red Hat keeps hanging

Hi. I have installed j2sdk6.0 on my Red Hat Linux 9.0 box. However, applications that I run (for instance my prevoius applications and NetBeans 5.5) hung unexplained in the middle of use. There is no error report and I have to kill java and start all over again. Is this an incompatibility problem?

[305 byte] By [Jamwaa] at [2007-11-15]
# 1
I have not seen this problem. But it is better to provide more information.Get stack information from jstack -m <pid> info and check where itis hanging. See if there is any deadlock or any threads stuck.
swamyva at 2007-7-12 > top of java,Core,Monitoring & Management...