From: <glassfish_at_javadesktop.org>
Date: Fri, 14 Nov 2008 08:01:26 PST

This can be solved by changing:

securerandom.source=file:/dev/urandom
to
securerandom.source=file:/dev/random

in the java.security file in the directory JAVA_HOME/jre/lib/security.
[Message sent by forum member 'ndb' (ndb)]

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