most of my album in my iphone doesn't have album art only some of them but all of them are in my itunes resyncing doesn't solve the problem

also i noticed that when i clicked get info and on the album art tab it doesn't show the pic (you can tell there is a pic but you can't see it only "an outside glow of the pic")...deleting and adding again the pic is still the same result

was itunes 7.7 and 2.0.2(no problem here)
upgraded
itunes 8 and 2.1(don't know if its itunes 8 or 2.1)

what you can do is download a picture yourself of the album
for example
use google
search the album, click on Images, so it displays images, find it. save it as artwork.jpg in the folder where the files are at
then in itunes refresh and it should now display album artwork

you just have to google and d/l the artwork yourself. itunes sucks in this regard
almost all my albums it could not find