Silverlight on Mac? Experiences?

There's an inquiry out on the mailing list as to whether Silverlight, Microsoft's Flash-ish plug-in/software, is problem free. (If you're a mailing list subscriber, feel free to jump in!) Here's some interesting links found whilst googling for an answer beforehand:
From Apple Discussions: some great general advice on a range of plugins from Real to Flash to what plays WMV files -- and how and where to get them. From the (Microsoft) horse's mouth, what to do when Silverlight thinks you're a PPC when you're an Intel Mac.