I just opened VS 2010 Professional on my machine, launched a new ASP.NET MVC 4 web application project, and noticed that it did not seem to create a solution file. This means that I cannot - or, it seems, cannot add a new project to the solution, because it is not there!
Here is a screenshot showing the problem:

I just tried to create a number of other new projects, for example WinForm, a console application and a class library, and they all have the same problem, but not sln.
Can someone give me an indication of what is happening?
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