(adsbygoogle = window.adsbygoogle || []).push({}); So i just jailbreak ed my iPod a few days using (Greenp0sin). Today it keeps restarting itself what should i do?

Just restore it?

Try restoring and re-jailbreaking. Be careful not to update to the latest firmware (4.2.1) as you will not be able to jailbreak. If this does not work restore, but set up as new iPod instead of restoring from back-up.