This is a followup question from [the now deleted] thread:

http://web.archive.org/web/20100812071342/http://stackoverflow.com/questions/783238/why-windows-7-isnt-written-in-c

What kind of problems might one expect to encounter by choosing C# over the tried-and-true strategy of using C? What kind of problems in this domain might be better solved by a high-level language like C# compared to C?