Font2DTest.jar is failing for Arabic-Majalla UI on Windows-Vista

JDK build used:jdk-6-beta2-bin-b75-windows-i586-09_mar_2006.exe
               jdk-6-beta2-bin-b75-windows-amd64-09_mar_2006.exe

Locale:ar_SA.
OS:widows-Vista beta1(build 5308)
Arc:AMD64/x86.

Reproducable steps
===================
1)Installed the jdk bundles
2)set the JAVA_HOME and PATH
3)goto java home directory under that /demo/jfc/Font2DTest.jar
4)run the following command java -jar Font2DTest.jar.
5)choose the unicode range as Arabic and set the font as majalla UI,
JVM crashed and detected unexpected error
Please see the attached log file:hs_err_pid1160.log

Note:
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- jvm crashing is for majalla UI - Arabic only.for other fonts there were no issues.
- Reproducable on both 32bit/64-bit Vista.