What you have, and many other countries who have won gold are enjoying, is Australian coaches.
In cycling Wiggins and Pendleton had Shane Sutton as coach and Tim Kerrison has been coaching some of the other medalists. Both lured to the UK with lots more money than the AIS (Australian Institute Of Sport) was willing to pay.
The two women who beat our girl in the sprint finish of the Triathlon are both coached by Aussies.
The young Chinese swimmer Ye Shiwen was coached by one of our senior Olympic coaches in Australia. He got paid $500,000 for each gold she won. She had to beat Aussie girls to win. A bit of a worry when he gets paid a lot of money if somebody he coached just prior to the Olympics beats the girls he is coaching at the Olympics

Another of our senior swim coaches had a similar deal with South Korea and one of their swimmers, Park Tae-Hwan, who won two silver medals.
Another Aussie was the coach of the women Team GB rowers that won the women's pair, double scull and lightweight double sculls whilst we had very poor results.
We can live with them coaching Team GB but another of our senior coaches defected and helped the American women's eight to gold. He should be shot!
I think there are a couple helping your sailors as well.
The vast majority of Aussies are thrilled that Team GB is doing so well and there is very little sour grapes in the media.
The defection of coaches is a sore point.
Black Holes happen when God divides by zero.