JCK : JCK-runtime-1.5a b11
J2SE : FAIL - jdk 1.5.0_15 b04 (also 1.5.0_14 b06)
Platform[s] : FAIL - solaris10 u3 u4 sparc
Desktop : FAIL - Java Desktop System release 3, CDE 1.6.3

Xwindow system stops responding when api/java_awt/Graphics/index.html#DrawPolygon tests starts.
This happens with Solaris 10 update 3 and 4. Tests passes without any troubles on Solaris 10 update 2.
Tests also passes when only X and Xterm started without any desktop (failsafe session).

Steps to reproduce:
1) Log in to Solaris10 mashine, for example stt-55.russia.sun.com stt-56.russia.sun.com stt-58.russia.sun.com Use CDE or JDS.
2) Install JDK and JCK. They are already installed on the mashines mentioned above.
3) Run command (change paths to java and JCK classes according to your installation, if your are not on one of the mashines mentioned above.):
/export/JDK/jdk1.5.0_15/bin/java -classpath /net/stt-13.russia/export/stt/jck_promotions/1.5a/fcs/b11/binaries/JCK-runtime-15a/classes javasoft.sqe.tests.api.java.awt.Graphics.DrawPolygonTests -TestCaseID ALL
4) Desktop will stop responding.

I have added the source code of the test to the comments.