I can confirm that,
I downloaded and installed NCrunch yesterday and enabled it for a solution where I want to use it.
Today I noticed that the .ncrunchsolution and .ncrunchsolution.user files are created for two other solutions that I opened but never enabled NCrunch.
This is reproduceable for every solution I open.
And I noticed that the "NCrunch Tests" window is docked where I docked it in the first solution but according to the docs this should be stored in the .user file:
http://www.ncrunch.net/d...unch-with-source-control