Clickonce + .NET client profile 4 framework + offline

I have a Windows Forms project using Visual Studio 2010, and I am deploying using ClickO开发者_JAVA技巧nce.

I need the application to work offline as well as online.

I have configured the prerequisite - .NET Client Profile 4 and set the location to the same as the application.

Everything seems to work as expected, but upon testing I have found it takes 5 minutes or more to install the .NET Client Profile 4 and it also requires a reboot.

Why does it take so long to install offline (I thought this was going to be mega fast like promised)?

And why does it require a reboot!?

---

5 minutes? You think 5 minutes is long? It took an hour to install .NET 3.5. I'd say 5 minutes is pretty darn good. It takes longer than that to install iTunes, dude.