Well that's a Java crash, not much can be done beside Apple Java guys FINALLY getting Java right. I have lots of those Java crashes. Sometimes I wish Sun would have done the Java port onto os x... Well maybe it'll be fixed in the next Java update.
Have you tried reinstalling Java 1.4.2 update 2? Because 10.3.9 did broke Java on some machines.
http://www.apple.com/support/downloa...update142.html
Bonne chance