FULL PRODUCT VERSION :
java version "1.6.0_10-ea"
Java(TM) SE Runtime Environment (build 1.6.0_10-ea-b12)
Java HotSpot(TM) Client VM (build 11.0-b11, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

EXTRA RELEVANT SYSTEM CONFIGURATION :
Laptop has extra wide screen (1280x800)

A DESCRIPTION OF THE PROBLEM :
When start of a JNLP app is crashing, a dialog appears with the title "Error Launching Application" and the text:

An error occured launching or running the program
Please send this information to your system administrator.

In my particular case the actual error message is very, very long.

So the dialog is stretched to become wider than the actual screen.

That is not very smart. No dialog should ever be larger than the screen.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Produce a problem that posts an extremely wide error message.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The dialog should be not larger than 2/3 of the actual screen size.
ACTUAL -
The dialog is wider than the screen width.

REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
User must manually resize the dialog to be small enough to fit on the screen.