iPod won't go into sleep mode
 

Hey all. I just bought an iPod 4g and I'm having a problem. I can't put it into sleep mode anymore. I'm able to reset, but it doesn't help me put it to sleep. It was working fine earlier today.

Anyone know why this is happening?

Is a restore an option, and will iTunes remember what tracks I had on there?

Thanks

Edit: Restore didn't help.

apple gave me a new one. nevermind