I found this bug report from Sun indicating a problem with certain Java versions and enabling a JDWP port. But that bug report doesn't indicate when or even if it was fixed. Does anyone have more up-to-date info on that? thanks
Scroll to the end of the bug report. It says:
This was fixed in mustang b49 as 6306165.
Posted Date : 2005-10-20 07:30:11.0
(Mustang was the project name for JDK 6.)