63% premium...insanity. This is all about patents, isn't it? Instead of spending $4billion for patents, spend 3x as much, get a huge portfolio (I don't know how large, but it's supposedly quite large)..and a part of a company as well.
I'd say this was probably plan b, for if their previous patent purchase didn't happen. The problem with Google, or any software company buying a hardware company is that generally the street values hardware at a lower multiple so this has the chance to pull down google's market cap. We'll see how the market reacts to this during today's trading.
This could have been part of a Google patent blitz from the start.