Research In Motion has made generally available BlackBerry Enterprise Server 5.0 Service Pack 1. Most corporate environments running BES 5.0 have most likely already got Service Pack 1 installed already for their users. But just in case you were holding off, you can now head to the Research In Motion download site and grab your copy for IBM Lotus Domino and Microsoft Exchange. As always, Research In Motion has updated their knowledge base articles to reflect all the new changes and features as well.