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USART IDLE interrupt for no reason?

Question asked by shen.da.001 on Jun 7, 2013
Latest reply on Jun 7, 2013 by Clive One
hoping someone knows the answer to this...
when I send a character on usart2, SR->IDLE flag is set for no reason, RXNE = 0 but I can see the data in the DR. what weirds me out is IDLEIE is 0. 
so far I simple can't get RXNE to set at all.
this is on the stm32f107vc