Anyone who has rooted their Nexus S using 1.0-XXJK8-nexuss-superboot and found that their camera and wifi stops working. Its because you need to use the correct version of superboot. Instructions can be found here
http://forum.xda-developers.com/archive/index.php/t-882333.html. You can correct the problem by rerooting with the correct version. Also anyone who finds that on windows, the cmd line stays in "waiting for device" during fastboot mode, installing PDANet for Android fixes the problem as per
http://forum.xda-developers.com/showthread.php?t=875580. Hope this saves you some time and heartache :)