Test suite name: TCK-jnlp manual
JDK/JRE tested: JDK7u45b06(32bit)
OS/architecture: oel5.6-x86

Reproducible: Always
Reproducible on machine: oel5.6-x86, solaris11-sparc, judo.ru

The log loacation: http://jsqalab.us.oracle.com/results/Evergreen/7u45/b06/tck/oel5.6-x86/results-rerun2/workDir/api/javax_jnlp/SingleInstanceService/index_AddRemove.jtr

Is it a Regression: Yes
Regression introduced in release/build: 7u45 b06
Test passed on: 7u45 b05

Steps to reproduce:
1. install the JDK7u45b06 (download from http://jre.us.oracle.com/java/re/jdk/7u45/promoted/fcs/b06/bundles/linux-i586/jdk-7u45-linux-i586.tar.gz) locate at /tck/jdk1.7.0_45
2. download workspace from
http://jre.us.oracle.com/java/re/jnlp_tck/6.0.18/promoted/latest/bundles/jnlp_tck-6_0_18.jar
3.use java -jar jnlp_tck-6_0_18.jar then put TCK-JNLP-6.0.18 under /tck
4.download attachment file jnlp-WinXPPro.zip. uncompress it to /tck
5.download attachment file jnlp6.0.18.jtx, put it under /tck/TCK-JNLP-6.0.18/lib
6.Run the script javatest.sh under /tck/jnlp-WinXPPro/AT-03.26-12.46.15/RUN

Actual behavior:
After pressing 'press this button to continue' button in the test frame, then pressed two times run in the Security Warning dialog, The case index_AddRemove failed automatically.

validations:
1) 7u45 b05 on oel5.6-x86:pass
2) 7u45 b06 on solaris11-sparc: fail