Since the iPhone 3.1 upgrade, (and still buggy in 3.1.2) the ability to paste the password in the iPhone / iPod touch App Store or iTunes app doesn’t work (read more about the bug). For people like me with long and complicated passwords, the trouble of typing the password manually is a pain. Thankfully CopyPaste Fix on Cydia does the trick for us.
This would fix the Apple app store and VPN bug aswell as fix the SpotSMS message info dialog (sorry not sure about the SpotSMS bug).
Available via BigBoss on Cydia. Search for ‘CopyPasteFix’.