MAC OS X 10.6.3 (There is no device supporting CUDA!)

After a MAC sw update, which took my MAC Mini to MAC OS X 10.6.3, I can not run the sample programs.
I uninstalled CUDA by deleting /usr/local/cuda, /System/Library/Extensions/CUDA.kext, /System/Library/StarupItems/CUDA as well as the /Developer/GPU Computing directories and reinstalled everything.
I have and still am using 2.3.1a driver.

Make went fine with some warnings but when I test:

CUDA Device Query (Runtime API) version (CUDART static linking)
There is no device supporting CUDA.

Device 0: “Device Emulation (CPU)”
CUDA Driver Version: 2.30
CUDA Runtime Version: 2.30
CUDA Capability Major revision number: 9999
CUDA Capability Minor revision number: 9999

Also, when I try to launch CUDA Visual Profiler, I am getting “Unable to initialize CUDA” message.

I think you need to move to 3.0 for 10.6.3.

Moved to 3.0 (driver, toolkit and sdk).
Make gave lots of warnings but no errors (using gcc4.2 and g++ 4.2)
Ran deviceQuery, bandwidthTest and particles successfully.
Not sure if an unsuccessful kextunload with 2.3 was the culprit.