Well, I've created the dump file. If there's someplace I can send it, that's fine, though it's quite large.
I've tried using the HAT (for Java 5, jhat is Java 6), but it doesn't give me anything obvious that I can relay here.
[Message sent by forum member 'whartung' (whartung)]
http://forums.java.net/jive/thread.jspa?messageID=242553