CRG Socoreboard can block for an indefinite period of time on startup if the entropy pool is empty. This is explicitly related to http://docs.codehaus.org/display/JETTY/Connectors+slow+to+startup
It probably will only be an issue when stopping and starting it frequently, and only on Linux based machines.
There is a workaround in the link.
Anonymous
Great find. I added a crg.scoreboard.properties param to control using Random or SecureRandom and defaulted it to use Random, which should avoid the delay. Updated in git.
Thanks!