iPod touch Some songs won't come off iPod!

I have and iPod Touch 4th Generation. I noticed today that although I deleted about 30 songs from my iTunes library, when I sync my iPod the songs remain on my iPod. How is this possible? Is it a glitch or am I doing something wrong? I know I can manually delete songs from my iPod by sliding on the song title and pressing delete but I don't remember every single song I deleted from my iTunes library so I might miss some songs. This is very frustrating! Any help is appreciated! Thanks!

shinobi-81 said:

Seems like a software bug. Have you tried to restore the iPod?

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No I haven't tried restoring it. I was hoping to avoid that. Also, I forgot to mention its not jailbroken and never has been.

Nermal said:

Is iTunes on your computer set to automatically or manually manage music on your iPod?

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Automatically.

To make matters even more odd, I just deleted an album from my iTunes library as a test. When I finished syncing my iPod, the album I just deleted was removed from the iPod, but the original albums that won't go away are still there. This is so strange!

Ok even though I have been getting no replies ITT here is an update:

I plugged in my iPod and clicked on the "music" tab in iTunes, then I unchecked the "sync music" check box and deleted all the music off of my iPod. After that, I rechecked the "sync music" check box and did another sync and put all the music back onto my iPod. Then I deleted a few songs from my iTunes library and synced my iPod and the songs were removed from my iPod as well. So everything seems to be back in working order as of now. I still have no explanation as to what happened though.