CIGBUS Occurred ...why

I am getting an error " Full Thread Dump" and jvm crashes. Why this is happening and how I would handle it ?
[115 byte] By [Indranil.Sarkara] at [2007-10-3 4:39:31]
# 1
Please don't cross-post (this was in the concurrency forum too).Start with the trouble-shooting guide: http://java.sun.com/j2se/1.5/pdf/jdk50_ts_guide.pdf
davidholmesa at 2007-7-14 22:43:26 > top of Java-index,Java HotSpot Virtual Machine,Specifications...