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a) The licensing issues have been resolved
b) The licensing issues have not been resolved
c) You don't care if at some point in the future, a large number of unsuspecting open source projects get hit with a takedown notice at the whim of Microsoft.
IMHO it is also true for most linux projects. Who know, the PHP, Python, Apahce, Samba, gcc, glibc, gtk, kde, mozilla, openoffice, wine, lazarus, gambas, kdevelop, etc doesn't hurt any M$ patents ? Propbably the most of linux projects can be sued by software patents...