Christian Moser provides on his page a SharedResourceDictionary for WPF so that resource are only initialized once.
I´ve tried to use this ResourceDictionary in my Silverlight 4 application, but i´m getting COMExceptions in Visual Studio or a message that the element is already a child of an other element.
Has anyone successfully used SharedResourceDictionary in his Silverlight application or is there a similar way to reuse ResourceDictionaries?