A very reassuring interview with Linus here in which he says that Linux hasn't been affected in any real sense by the SCO business, because the way they have done development is so open, when something happens you can just go look and see who did what and when, which isn't so easy in proprietary software models. Clearly he has done so:
So we actually have a very good notion of where the code came from and what the [intellectual property] rights are...when it comes to the stuff that IBM has given Linux, we have been very, very careful about how we accept them. The one thing SCO has mentioned has been the Read Copy Update code that IBM gave us, and that wasn't accepted for the longest time into the kernel exactly because we knew the patents were owned by IBM. [But] we said we couldn't take it until you [IBM] said very explicitly that you also license the patents.
Lots more. As to why he chose to go to OSDL and not a commercial company, he says it's all about people having trust in him, as to his motivations. Now if only dear Darl shared the same values, we could wrap this up.