I may have posted this in the wrong forum last time, so i hope I can get some help from someone here. I've got a bit of a strange problem, everytime I sync my iPhone with iTunes a few of my albums' artwork disappears. It happens to about 10 different albums each time and the artwork disappears from every mp3 in the album.
It's extremely annoying for me as I'm borderline OCD with my artwork and for the many obscure albums in my collection I've had to hunt down the covers myself.

I'd be really grateful for some help as it's making me scared to sync!

What I've got:
QuickPwned 16GB iPhone 3G 2.1
Windows Vista Ultimate
(iPhone was Jailbroken on my macbook pro)