Midi Feedback Loop in Logic

hey everyone, I have a noteout patch with midi info coming from a wii (accelerometer data) which I am sending to logic synths (Logic Pro 8) and at times I am getting some notes that just will not end - it's very random as far as I can tell, in terms of which notes, but regular in terms how often it happens. Is there any thing I can do to stop this/minimise the chance it happens? I've tried adjusting sample rates, putting a limit on the duration in the makenote... perhaps the port is problem, I read somewhere that IAC port was a bad thing and likely to cause this but I have no idea how to stop this..

Thanks in advance and sorry for being a little general, I would post the patch but it's pretty generic in terms of an aka.wiimote sending the accelerometer to noteout (From MaxMSP1).