His birthday was usually the perfect platform for his party to prove its political strength. But today, as M Karunanidhi, the head of the DMK, turns 88, there's little of the traditional pomp and glory. A trip to Delhi to visit his daughter in jail was cancelled late last night. Instead, Mr Karunanidhi delivered a message that suggests a growing rift with his political partner, the Congress. "Bad friendship ends in trouble," he said.