Java SE (Java Platform, Standard Edition)

Hi.

This is a pretty frustrating error.

I have a Java Web Start based application.
Its been installed to thousands of PCs. Usually with no difficulty.

Now I have people who have Server saved profiles (when the windows user logs out, the profile is saved to a server).
Basically it seems that the C:\Documents & Settings\User\* is actually \\thisIsMyServer\User\*

How for whatever reason, only Administrator users can install the application normally.
A non-Admin user can:
*install & start simple web start applications (http://java.sun.com/docs/books/tutorial/ui/overview/demo.html)
*download & install the application

But....
*once installed nothing happens. The Java Console opens for a moment and closes immediately. My Application doesn't seem to start.
*the application appears in the Java Web Start application list
*if an icon is created, the application will not start from the desktop
*if the icon is copied (e.g. to the quick launch menu), the application starts correctly
*if the jnlp file is downloaded and started per double click from the desktop, the application doesn't start
*if the jnlp file is downloaded/copied to another directory (not on the network drive

Being the great detective I am - I conclude.
Java Web Start doesn't like Network paths for non Admin users. But what is the trick to make this work?

Oh yes - I forgot to mention - I've turned on all tracing/etc in Java Web Start - but it doesn't produce any thing in the log files when it crashes :) awesome!

Thanks

Martin