There were many deaths because of the flight and expulsion of Germans from the territories in the East that are now parts of Poland and Russia. Millions of people had to flee and it was winter. There are different estimates for the number of casualties. I've often heard the estimate of 2 millions, but there are also far lower estimates, this may help:
http://en.wikipedia.org/wiki/Expulsion_of_Germans_after_World_War_II#The_results
I am not sure which number is correct.
In the West there was nothing like this. Those who were in the British or American zones were lucky. My mother was in the British zone as a child and can't say anything bad about the British. It was a time of shortage and many difficulties in life, but not so terrible that many people died. All in all she doesn't have too bad memories from that time and she hasn't personally heard of people who died because of bad living conditions where she was. The worst hardship they had was that they had to share their house with refugees from the East.
My father was in the French zone, he and his family suffered from hunger and his mother died in 1947 from an infection (although she was in hospital). But this was rather a single case, it certainly did not happen in the millions. At least I don't know anyone else personally who lost a family member under such conditions after the war in the West.
Right after the war Germans used to speak a lot of German sufferings and liked to view themselves rather as victims than as perpetrators, I am sure that if there had been millions of deaths (except for those during the expulsions and the war casualties) that would have been a big story and people would have spoken a lot about it. Near to 10 millions is certainly false.
I had never heard of this James Bacque before. I just googled his name and found that his claims were rejected by other historians:
http://en.wikipedia.org/wiki/James_Bacque
I also found a German website where he was massively criticized.