With Mustang b45, if I do this:

$ java -Dcom.sun.management.jmxremote.port=9999 Foo

I get this:

Error: Password file not found: /jmgt/mirror/jdk/6.0/promoted/latest/binaries/solaris-sparcv9/jre/lib/management/jmxremote.password
Error occurred during initialization of VM
java.lang.RuntimeException: Password file not found
        at sun.management.Agent.error(Agent.java:288)
        at sun.management.Agent.error(Agent.java:279)
        at sun.management.Agent.startAgent(Agent.java:136)
        at sun.management.Agent.startAgent(Agent.java:224)
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# Internal Error (455843455054494F4E530E4350500115 01), pid=14210, tid=1
#
# Java VM: Java HotSpot(TM) Server VM (1.6.0-ea-b45 mixed mode)
# An error report file with more information is saved as hs_err_pid14210.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#

The error on the first line is correct and corresponds to the behaviour on Tiger. But it is obviously not right to go on and signal an internal error and dump an hs_err file. The VM should simply exit.