Security improvements of MS Silverlight Build 3.0.50106.0?

[Juha-Matti Laurio <juha-matti.laurio () netti fi>]

Does anyone on the list know what are the latest security improvements of Microsoft Silverlight Build  3.0.50106.00, 
released on 19th Jan?

References:
http://support.microsoft.com/kb/979202

http://download.microsoft.com/download/F/D/8/FD8F5947-78FF-40A5-9A34-5E35243C12E4/50106/Microsoft%20Silverlight%20Release%20History.htm#SL_3_50106
(downloadable .htm file)

Juha-Matti
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