ViewNX has been revised to version 1.5.3 and Transfer to 1.5.2 (Windows) or 1.5.3 (Mac). This brings full support for Windows 7 and Macintosh Snow Leopard to the final main Nikon software products.
WT-4 Setup Utility and Thumbnail Selector have been updated to version 1.1.4, but wouldn't you know it, that doesn't include Snow Leopard support.
So, Nikon, if you're listening, just getting software updates out the way you have been isn't solving everyone's problem. Indeed, those of us who use multiples of your products end up in situations where we're still stuck, even after you've made an OS update on one of the products we use. For the last month I've had two systems running, one on Mac OS-X 10.5.8 and one on OS-X 10.6.2. This isn't exactly helpful (and not everyone can do it).
Basically, it all boils down to this: you still don't respect photographers' workflows. In my Introduction to Nikon Software book I outline three common workflows. You know which one has proven to be the most problematic? That's right, the all-Nikon one. If you rely upon Transfer to ingest images and Capture NX2 to process images, then having Transfer be the last program to get OS-based updates simply kills the entire workflow for some. Kills it. As in "the person so affected looks for another solution for ingesting," which means that they end up abandoning the all-Nikon software solution.
So, if Nikon wants to stay in the software business, they need to: (1) get their updates closer to those of the OS foundations they sit on; and (2) do all their updates together. What this last round of updates has revealed for the world to see is that Nikon simply doesn't have enough resources nor enough coordination in their software groups.