I have a question on licensing FSharp PowerPack.
On the project page at codeplex.com is Apache license 2.0. At the same time, after installation, in the folder with the PowerPack you can find license.rtf, which claims that product distributed under MS-PL.
Which license F# PowerPack is distributed under?
The license has changed from MS-PL to Apache 2.0 relatively recently (it was licensed under MS-PL previously and the change announcement is here). I think you can safely assume it is licensed under Apache 2.0, because this is what the team intends. As far as I can tell, this is just a packaging bug and the license distributed with the installation should be Apache 2.0 too.
I'm not a lawyer, but I think it may be possible to release the code under multiple different licenses if you own it, so it may be the case that legally, the installation is MS-PL licensed and online source is Apache 2 licensed. (Even if it isn't intentional.)
However, both licenses allow you to do essentially the same things, so this shouldn't be a problem.