ipod/itunes problems

since 4.7 came out i cannot play or load my ipod without skipping or a "tape dropout" type problem occuring. i am using with a new dell and all drivers are updated. i only transfer music from prerecorded cd's. if i play the music on home system or computer using windows media or real player problem disappears. i looked on apple's discussion section and it looks like it is happening on other people's units. i have 2 40 gig units and it does it on both. any suggestions???