Just to add to the data sampling, I have a Q6600 and Netflix streaming works fine on my Hackintosh. I haven't encountered error 8152.
The initial problem I encountered was similar to joeblough (the preflight check thought I was PowerPC and wouldn't proceed with the install.) There's another thread here where people were having similar issues with the Silverlight installer. There was a modified installer that bypassed the InstallationCheck. However, the Netflix player requires a more recent version of the Silverlight installer. So I took the InstallationCheck from the old Silverlight installer and inserted it into the new installer. As I said earlier, I have encountered no issues playing movies and TV shows from the Netflix player.
I'm not sure what that 8152 error is, but maybe try deleting the Silverlight plugin from Library/Internet Plug-ins and reinstalling it using the updated installer I have reposted here from the other thread. I haven't had Silverlight installed my Hackintosh before yesterday.
I'm not sure if this will work since it sounds like you guys are able to get Silverlight installed and are encountering another error within the movie player, but it's worth a shot.
The installer package is zipped. Replace the xx with tt.
Credit goes to TinFoil and critic81.