[Interest] qt4.8.3 on mac IMKInputSession activate

[sydnash]

Hi all,

when i run my qt application on mac, it show me the message as  follows on terminal.

2012-10-14 21:00:42.181 amd_aoi[1134:707] [IMKInputSession activate] exception caught.
	IMKInputSession: <IMKInputSession: 0x7fcdac62ca90> -- 
	NSInvalidSendPortException : [NSMachPort sendBeforeDate:] destination port invalid

i'm new of mac, could you tell me what circumstance will appear this kind of message.
i installed qt-4.8.3 on my macbook.