Update "available" but already installed - how to fix?

OK, my iMac running OS X SL 10.6.8 says I have an update available, but it also says when I go to check, it says it's "Installed". Which it is.



Nothing else is showing, so how do I get rid of this "update" and notice fixed?

Attached Images

	Screen shot 2013-07-11 at 11.02.55 PM.png (41.3 KB)
	Screen shot 2013-07-11 at 10.56.22 PM.png (76.0 KB)
	Screen shot 2013-07-11 at 10.43.30 PM.jpg (45.9 KB)

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