If you have installed ScreenShot on iPod Touch and enabled it, when rebooting you will have a hard time starting up. It will most likely freeze. There is two ways to handle this: 1) Force restore and re-jailbreak. 2) If you have OpenSSH installed, login with you client of choice (I used WinSCP) and goto: /Applications, and delete screenshot.app /Library/LaunchDaemons and delete the .plist with screenshot in its name. Now, reboot your iPod, and it should open up normal. Goto installer and delete your ScreenShot. Sorry, but ScreenShot is for iPhones.