Hello ico,
The first thing after giving cash to the dealer was to open up the box and check specifications by viewing system properties of the laptop. The laptop has Windows 7 Home Basic.
I found that the system properties showed that it had K125 processor which is a single core processor. It did not have K325 processor.
I asked the dealer why such a difference - he did not know the answer - he said I asked for the model and I got that model. In fact after that I checked all the Dell dealerships in Nehru Place, Delhi inquiring about the model M101z and checking system properties myself, I found the results as same.