The job to look at is http://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/jbosstools-install-grinder.install-tests.matrix_master/
It's currently unstable because of various issues, mainly with metacity on CI slaves, over and over again. So since it's often failing, the error notifications get ignored at the moment,
But anyway, specifically for the change about certification URL you linked, install-grinder doesn't follow certification URL links and such issues don't prevent Central or installation from working, so even with a wrong URL at that locaiton, install succeeds and we get no notification.

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Mickael Istria
Eclipse developer at JBoss, by Red Hat
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