FULL PRODUCT VERSION :
java version "1.7.0_06"
Java(TM) SE Runtime Environment (build 1.7.0_06-b24)
Java HotSpot(TM) Client VM (build 23.2-b09, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
4NT 7.01.370 Windows 2003 [Version 6.1.7601]

A DESCRIPTION OF THE PROBLEM :
we have jnlp file dynamic generated on server side where the session id will be set in href tag:

<jnlp spec="1.0" codebase="http://localhost:7101/Jacc" href="jacc.jnlp?id=xjnMQ82DZ7jLnC66JrtpH9Tm1VS40hT7xh3LRQyLHldxS537R2Yp!-1760466026!13461560671751346156067177">

It works fine with java 7 versions before upgrade 6. After upgrade to jre 7u6, the web start crashes down and can't start the application.




REGRESSION. Last worked in version 7

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Here is the whole jnlp file:

<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0" codebase="http://localhost:7101/Jacc" href="jacc.jnlp?id=xjnMQ82DZ7jLnC66JrtpH9Tm1VS40hT7xh3LRQyLHldxS537R2Yp!-1760466026!13461560671751346156067177">
   <information>
      <title>Yin Daily Build JavaClient</title>
      <vendor>Oracle</vendor>
      <homepage href="http://www.oracle.com"/>
   </information>
   <security>
      <all-permissions/>
   </security>

   <application-desc main-class="com.agile.jacc.e6.Jacc">
      <argument>-home</argument> <argument>$APPDATA/e6</argument>
      <argument>-imageRoot</argument> <argument>http://localhost:7101/Jacc/images&lt;/argument>
   </application-desc>

   <resources>
      <j2se version="1.7" max-heap-size="512m"/>
      <property name="sun.java2d.noddraw" value="true"/>

      <!-- Mapping of packages to JAR files and application parts -->
      <package name="ilog.*" part="graph" recursive="true" download="lazy" />
      <package name="com.agile.share.com.*" part="com" recursive="true" />
      <package name="com.agile.plmapi.*" part="http" recursive="true" />
      <package name="Acme.Crypto.*" part="http" recursive="true" />
      <package name="com.agile.autovue.jvue.plugin.*" part="autovue" recursive="true" />

      <jar href="lib/agile-jacc-e6.jar" part="main" />
      <jar href="lib/agile-callables.jar" part="main" />
      <jar href="lib/agile-pdm.jar" part="pdm" />
      <jar href="lib/agile-workflow-plugin.jar" part="graph" download="lazy" />

      <jar href="lib/commons-logging-1.1.1.jar" part="main" />
      <jar href="lib/commons-discovery-0.5.jar" part="main" />
   </resources>

   <!-- Native resources -->
   <resources os="Windows" arch="x86">
      <nativelib href="lib/comfyj-native-2.9.jar"/>
      <nativelib href="lib/intel-ms-nt5.1/agile-exm-native.jar"/>
      <nativelib href="lib/intel-ms-nt5.1/agile-fms-client-wrapper-native.jar"/>
   </resources>
</jnlp>


Steps:
1. Save the file as example.jnlp
2. "javaws example.jnlp" --> the web start is not started
3. If you remove the "?id=......." in tag href and launch it --> the web start works

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The web start works as before

REPRODUCIBILITY :
This bug can be reproduced always.