f# compiling too slow

I'm new to f#. I downloaded the Visual Studio 2010 shell and the F# ctp and wrote a small hello world script with the following code

printfn "Hello World"
let _ = System.Console.ReadLine()

This takes around 13 to 15 seconds to compile which is very slow compared to running a similar C# script(which takes around 2 secs). I'd like the F# script to compile faster so that my development(i.e. experimentation) time would be reduced, I don't care for the runtime performance.

Is there any way to make the F# script compile faster, maybe turn on/off some Build settings in Visual Studio or something like that?

FYI, I'm using a 4 year old pentium 4, 1.5 gb RAM machine, if that helps.