Hi,
The difference is in the number of services that I get back. usually It goes between 350 to 360 services I am not sure what my organization full number is. Also the services that don't return are different every time. I read it with a python script, when I tried to use the browser and I checked the number manually it was the same problem.
My guess is that the server just doesn't return the full service list.
Thanks Roi.