My Ipod Nano (the little one squarish) is not sleeping! I want it to sleep but i accidentally took out the connecter while it was still on the computer! all it says is "Connected. eject before disconnecting" What will i do?

Depends on the model iPod nano but no off button only sleep! But either goes to sleep after a few minutes of inactivity! Press and hold play/pause for a few seconds to force sleep! If not being used slide hold on, to stop it coming on!

Hi - Sounds like it may need to be reset. Here's how:

• Connect your iPod to the power cord for at least ten minutes before resetting.
• Reset the iPod by holding down the Sleep/Wake button AND the Volume Down button - together - until you see the Apple logo appear. When you see the Apple logo appear, let go of the keys.
• Connect the iPod to your computer and make sure it appears in iTunes.

See if that helps. If not, leave another message - there's another procedure you can also do, but it's a little more complicated.

This is a pretty simple nano repair and the part only cost $19. iRefresh can install a new one for you for $44. This repair includes new volume electronics aswell. iPod nano 6th gen Power Sleep Button Repair

Press and hold the Sleep/Wake button and Volume Down button simultaneously for at least eight seconds or until the Apple logo appears. You may need to repeat this step.
If the above step did not work, try connecting iPod to a power adapter and plug the power adapter into an electrical outlet, or connect iPod to your computer. Make sure the computer is turned on and isn't set to go to sleep. Try resetting the iPod while it is connected to power.

theres no switch of on ipod, only sleep, just dont forget to sleep and lock it if your not gonna use it.:)

connect it to system and when detected as a removable drive,goto ipod_control>device folder and rename _locked to _unlocked...that will unlock your IPOD

The following text is from:http://ipod.about.com/od/tes1/a/turn_off_nano.htm
Turning off the iPod nano How do I turn off the iPod nano then, you may be asking? You let it, or make it, go to sleep.
The iPod doesn’t really work in terms of on and off. Instead it only deals in awake or asleep.
If you use your iPod for a minute or two and then set it aside, you’ll see its screen start to dim, and then eventually go black altogether. This is the iPod going to sleep. When an iPod is asleep, it uses much less battery power than when the screen is lit up and the music playing. By letting your iPod sleep you conserve your batteries for later.
You can also force it to go to sleep by holding down the play/pause button for a few seconds.
Keeping Your iPod Asleep If you press any button on your nano when it is asleep, the screen will light up quickly and your iPod will be awake and ready to rock.
If you plan not to use your iPod for a while and want to store it, you can make sure that you conserve battery power and keep your iPod from playing a concert to the inside of your backpack by engaging the hold switch.

try resetting it then connecting it to itunes.

Go to extras. Select clock. Press enter on you clock settings. Select sleep timer.

is the sleep option on? hold the button down