JNLP file association does not work on SuSE9.3/GNOME

JDK-Info:
---------
java version "1.6.0-ea"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-ea-b56)
Java HotSpot(TM) Client VM (build 1.6.0-ea-b56, mixed mode)


Operating System:
-----------------
* SuSE Linux 9.3/GNOME


Steps to Reproduce:
-------------------
1) Install jre b56
2) Clean cache (\rm -rf ~/.java)
3) Launch a JNLP application that creates desktop association
(./javaws http://ramkumar.india.sun.com:8080/JaWS_mywork/Shammy/Shammy.jnlp)
This application creates association to file extension "shammy"
4) Create a file on desktop with extension "shammy" (example test.shammy)

Note that this desktop file "test.shammy" is not associated to the JNLP Application Shammy.jnlp

Exepected Behavior:
-------------------
The JNLP assocation created for a desktop file should demonstrate the association feature of Java web start