DVD speed

Does anyone know of the DVD-ROM speed required?

I have read that it is a minimum 32x

http://www.microsoft.com/games/pc/flightsimulatorx.aspx

I have had a bit of a search around and it seems that 16x DVD-ROM is the standard even on top spec. new machines.

Are there going to be lots of people frustrated when they get a copy of Flight sim X as this requirement is not advertised in many places in the minimum spec. requirements.