could not debug in eclipse 3.2

Recently I couldn’t debug my application using eclipse 3.2, it will throw “Could not connect to VM”. And in the console there is a log

FATAL ERROR in native method: JDWP No transports initialized, jvmtiError=JVMTI_ERROR_INTERNAL(113)
ERROR: JDWP Transport dt_socket failed to initialize, TRANSPORT_LOAD(509) ["debugInit.c",L476]
JDWP exit error JVMTI_ERROR_INTERNAL(113): No transports initialized

I am using Ubuntu 7.04, after a googling session, it seems that there are a lot of people have the same problem.

I found the solution in java forum, and add 127.0.0.1 localhost in my /etc/hosts solve the problem.