this was probably caused by http-forward cases; which are cases when urls from the loader queue change
and it was not possible to remove the old urls from the queue because they had been based on url hashes.
The queue is now again stored using the entry.hashCode, which does not change ieven if the url changes.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4332 6c8d7289-2bf4-0310-a012-ef5d649a1542