problems with noise recording..

[Johnny Cadelco]

Okk. so here's my issue; I've had the 002 rack for 1year and had no problems. The pro tools i have is version 6.9 and i got powerbook g4... i never had problems recording or anything. But lately i notice everytime i record everything seeems smooth as always, but when those aiff automatically creates, i hear them just to see if it sounds crisp, but it doesn't it records with noise even at -4db. I checked my cables and all that. I know the problem has to be either the software or hardware or something i'm not sure... When i record it sounds crisp but when that aiff files pops and i hear that, i hear the noise which is now making my mixes suck.

Can anyone help out? what should i do.. never had this problem and now its occuring, and didn't change any settings on anything.. soo