I have album art on EVERY single song of my iTunes (which contains about 4000 songs). but every once in a while ill notice that album art on some albums disappears and i have redownload the artwork for that album. it happens quite frequently. sometimes like 5 albums in a row (when put alphabetically) have their artwork missing. is this some sort of database error? Ive had my MacBook for about 2 months now and its always done this. I had my iTunes transferred from my Dell by transferring the xml file and the music files. Even on new albums ive added since ive changed to iTunes sometimes run through this problem.