Java 3D on Win2K with JDK1.4

Hi!
I am using Java 3D to create a few scenes.I understand that
J3D v1.2.1_0x is not compatible with JDK1.4 and so have recently
installed J3D v1.3 beta2.
However with this upgraded version I am getting a flickering white canvas
making the scene highly unstable.
This however I observed only on the Win2K and there was no problem
when I tested on WinNT.
Anyone of you come across this situation,could you please help !
Thanks,
Renji.

Thanks for your reply.
Well actually my 3D application works fine too,however its this
white patch that is annoying.I was infact curious because I observed
the same when I ran the demo programs too,and this only when I was using
Win2K with Java 1.4.
I also noticed that this happens mostly during the following actions :
1.When we minimise and then maximise the Window running the 3D application.
2.If we try switching between 2 or more applications and return to our main Application.
3.If an application is opened and placed above our main application the moment we minimize or
close the application it leaves behind the white patch on our main application.
Thanks again,
Renji.

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