If I understand TIm Lopez's post on 01-06-2011, the new 18.5.0.125 is now available to any NIS2011 subscriber who runs liveupdate.
I have NIS 2011 on two laptops. Liveupdate downloaded 18.5.0.125 on my Core2 duo laptop but not on my Core i5 laptop. Both laptops run windows 7 64 bit.
Did I misunderstand Tim's post?