F# is running very slow since last round of Windows updates

Question

I recently installed the latest rounds of Windows updates, including the .NET 4.0 updates and the Visual Studio updates (but not VS2010 SP1). Since then, my F# compiler has been running really, really slow. I thought it might be this problem with crl.microsoft.com, but it turns out not to be. Also, I think mscorsvw.exe has completed running. (I forget the command to force it, but it doesn't kick in, even when the machine is idle.)

Also:

The F# compiler is producing correctly running code, just slowly.

The C# compiler remains as fast as always.

Has anyone else experienced this problem?

-Neil

Answer 1

I forgot to run ngen.exe. After running that, F# compiles are back to normal speed.

-Neil