nslookup to the rescue

For those of you who get baffled when Google results don't match with the ones your client/colleague is getting, you can try this command line out (to open the command line, press on start/command prompt if you are using a PC):

nslookup www.google.com

It will provide you with the address(es) of datacenters used by Google to return the results - sets of results are different from one datacenter to the other. If you get more than one IP listed, it means that Google will be using any of them randomly.