try to use newest jdt.debug.tests with fix for bug 311594.
diff --git a/releng/map/otdt.map b/releng/map/otdt.map
index 45fcb02..c7e9f69 100644
--- a/releng/map/otdt.map
+++ b/releng/map/otdt.map
@@ -56,7 +56,7 @@
!-- .. but from original CVS:
plugin@org.eclipse.jdt.core.tests.builder=v_A48,/cvsroot/eclipse,
-plugin@org.eclipse.jdt.debug.tests=v20100419,/cvsroot/eclipse,
+plugin@org.eclipse.jdt.debug.tests=v20100505,/cvsroot/eclipse,
!-- not compiled but taken from org.eclipse.test:
!plugin@org.eclipse.test.performance=v20100122,/cvsroot/eclipse,