I think it has got to do with the default JVM mode on windows. It assumes -client and probably the heap allocated is 64M.
When I change the jacc server config to run with 128m, I get a full run.
asaldhana~/JB5/trunk/testsuite/imports>svn diff server-config.xml
Index: server-config.xml
===================================================================
--- server-config.xml (revision 61719)
+++ server-config.xml (working copy)
@@ -127,7 +127,10 @@
<jvmarg value="-Djava.security.policy==${build.resources}/securitymgr/
server.policy"/>
<jvmarg value="-Djava.security.debug=failure"/>
</server>
- <server name="jacc" host="${node0}"/>
+ <server name="jacc" host="${node0}">
+ <jvmarg value="-Xmx128m" />
+ <jvmarg value="${jpda.cmdline}" />
+ </server>