Last week I jailbroke my iPhone. And everything has been working fine since then. In the morning I tried to download a custom keyboard on the iPhone. Well after the download, the keyboard was somewhat strange, so I shut the iPhone off, and put it back on, thinking it will fix the custom keyboard. But well instead it somehow froze my iPhone. I can click on an applications, but once I'm inside the application, I cannot click on anything else. It won't respond to my touch inside applications. Everything is fine when I'm at the main menu, but if I click my phone book, I then cannot scroll down or select a person.

Another is that it doesn't close down. Like if you click the top button the iPhone; it goes on standby. Mine doesn't; my screen just goes dim. Only way to close it is to shut it down.

Restarting doesn't work, instead of the apple logo appearing in 6 seconds, it appears in 1 second, so it doesn't recognize restarts.
I tried to restore it on iTunes but iTunes is not picking it up.

Take it to an apple store (make a genius bar appointment) and have them reset it for you.

http://aoleonthemartiangirl.com/anime/background-picture-for-friendster.html