iPod Error in syncing.. not true.?

[goldndelicious1]

my friends bought me an iPod classic refurbished from apple back in January. everytime i try to drag songs on to it, it says there's an error in syncing. but all the songs end up on my iPod and there doesn't seem to be a problem. it also takes about 1 minute to delete 1 song from my iPod which is a long time if you think about deleting a bunch of songs at a time. any idea what could be the problem? an apple genius said it was because the iBook that i use to sync my ipod with needs logic board replacement. however, my friends have said that they have seen this message on their computers when they were uploading songs to my iPod. any ideas what could be happening? thanks.