Hissing due to un-authorized IK products

I am wondering if anyone else is having this issue... I am working on a piece of music that involves vocals. And every 8-10 seconds once the vocal lines are added to the piece of music (this has only been since the most recent notion 3 update btw) for about 2 seconds I get a hiss noise that comes out, then 8 - 10 seconds later it repeats. This will happen continuously as long as notion is opened once i work on this piece of music. The only solution I have found thus far is to remove the CSR effect from the piece of music. My thought is that CSR cannot process the vocal lines, which I find odd since N3 just plays them as piano instead which as an instrument has no problems in the score.
I have tried this on 3 computers, 2 desktops 1 laptop. the hardware in the desktops is Creative. XFI, and creative audigy 2. the laptop is generic. All three machines run windows 7.
Anyone else run into this problem?
I have tried this on 3 computers, 2 desktops 1 laptop. the hardware in the desktops is Creative. XFI, and creative audigy 2. the laptop is generic. All three machines run windows 7.
Anyone else run into this problem?