How to fix the iOS 6 artwork mess on iPod Touch 4th Gen? I'm desperate now!

Question

Okay. So this has been going on for a while and I've finally reached a dead end. Since the update to iOS 6 my musical updates to my iPod Touch have been painful and annoying. Whenever I try to upload new songs to my device, almost everytime iTunes fetches the wrong artwork for them. Basically, I manage my iPod manually by draggind and dropping. Before I upload new songs I use MediaMonekey to add artworks to the ID3 tags. This has worked like a charm for years. Until the dreadful iOS 6 update came out. Since then in order to get the correct artwork I had to upload and delete the songs or albums several times before iTunes could get them right. There came a point when I became too frustrated to do this every time I updated my library, so I decided to look for a solution. I googled my issue and found out that I was not the only one with it. The most common solution was to get all of your library wiped out and then reupload it again or something like that. I was desperate enough to try it. To my dismay, it did not work. Even when everything was wiped off, iTunes still managed to get half of the artwork wrong for the songs I uploaded.
So, I come here, hoping that someone will be able to offer a solution that will be able to make me manage and update my library like I used to without any hiccups.
Thanks in advance to everyone that responds!

Answer 1

Confirm that you have the latest version of iTunes.  It's 11.02 for the Mac.  I don't know about Windoze.
Try a system reset.  It cures many ills and it's quick, easy and harmless...
Hold down the on/off switch and the Home button simultaneously until you see the Apple logo.  Ignore the "Slide to power off" text if it appears.  You will not lose any apps, data, music, movies, settings, etc.
If the Reset doesn't work, try a Restore.  Note that it's nowhere near as quick as a Reset.  It could take well over an hour!  Connect via cable to the computer that you use for sync.  From iTunes, select the iPad/iPod and then select the Summary tab.  Follow directions for Restore and be sure to say "yes" to the backup.  You will be warned that all data (apps, music, movies, etc.) will be erased but, as the Restore finishes, you will be asked if you wish the contents of the backup to be copied to the iPad/iPod.  Again, say "yes."
At the end of the basic Restore, you will be asked if you wish to sync the iPad/iPod.  As before, say "yes."  Note that that sync selection will disappear and the Restore will end if you do not respond within a reasonable time.  If that happens, only the apps that are part of the IOS will appear on your device.  Corrective action is simple -  choose manual "Sync" from the bottom right of iTunes.
If you're unable to do the Restore, go into Recovery Mode per the instructions here.