I got an MBA for Christmas and managed to set it up to be on the same workgroup with the PCs in my house. Today, I downloaded and installed the updates for the OS and now there is no "shared" section in the finder at all. Shared items are checked in the preferences. Selecting "go" and "network" doesn't do anything. I checked in the system preferences and the name of the workgroup is correct. The other computers in the workgroup can see my shared folders, but I can no longer see anything shared. Ideas?