On Fri, 17 May 2013 18:10:10 -0700, Anthony Buckland wrote:

I note that update 2823324 was installed on my machine
in a recent mass update. Is it safe now, or do I need
to uninstall it again? Thanks.

You need to uninstall. As Ken1943 already stated: it was replaced with
another update (which you have probably installed at this moment).

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