I have a polish friend and his first reaction was: The Russians

to do with this. His second comment was that the Russians have done this kind of things to the Polish many times before. I feel sorry for that nation and all the coincidence make this eerie. But I guess if it was the President Hu and other Chinese high officials flying into Japan on a Japanese airplane to attend a ceremony in honor of the Chinese slaughtered by the Japanese during WWII, I would be pissed no matter it was an accident or not, especially the current PM of Russia is a former head of KGB. This one is freaky.