FULL PRODUCT VERSION :
1.6.0_19 and _20

ADDITIONAL OS VERSION INFORMATION :
Windows XP, Windows Vista and Windows 7

A DESCRIPTION OF THE PROBLEM :
URL packageUrl = getClass().getClassLoader().getResource("/existing/package");

worked fine in our webstarted app before u19 on windows, after that it returns null

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Use the above code line in a javaws application.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
packageUrl contains an URL instance pointing to the package
ACTUAL -
packageUrl is null

REPRODUCIBILITY :
This bug can be reproduced always.

Release Regression From : 6u19
The above release value was the last known release where this
bug was not reproducible. Since then there has been a regression.