Hello. FYI, jtreg 4.1 is now available; Jon Gibbons has written some blog entries discussing the new features, including agent vm mode: http://blogs.sun.com/jjg/entry/jtreg_old_and_new http://blogs.sun.com/jjg/entry/jtreg_4_1 I plan to transition my regression testing of OpenJDK 6 to jtreg 4.1. -Joe