A mysterious ailment which experts believe to be caused by microbes, but which superstitious observers blame on a "curse", has caused appeals in the case of the 1995 Milan murder of the fashion heir Maurizio Gucci to grind to a halt.The ailment, described as a "virus" which affects anyone who comes into contact with the court papers, appears as a rash on the skin, irritates the throat and causes nausea.In Milan, where the murder by a hitman occurred, it has been referred to as the "return of the curse of Gucci", the fashion dynasty that enjoyed fabulous success - with...