Seam on Linux Problems

When a seam application on JBOSS using java 1,5 is deployed in Unix platform, I am getting this error.

errorjava.lang.NoClassDefFoundError at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:141) at java.awt.G开发者_StackOverflow中文版raphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvi ronment.java:62)

It runs fine on windows platform. On my local linux machine it runs fine. but on another linux machine it works some times and sometimes it throws up the above error

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Check at your jboss logs which java version and java vendor are jboss using. Use only SUN Java 5 or IBM Java 5.