I really dislike the kind of patent suits that SCO has brought, but from this story it seems to be working. MS is buying rights to Unix sources:
No financial terms are being disclosed in the deal, under which Microsoft will license SCO's Unix patents and underlying technology called source code. But Microsoft's move suggests that the software company's lawyers view SCO's patents as important, and could encourage other companies to strike similar pacts.
Spotted via the .NET guy