Hello iPhone friends, I was just thinking this morning that I'd really like to personalize my phone a bit more etc and I love the stuff some members are showing off in the lock screen thread. How much of a performance drop if any is there after jailbreaking an iPhone 4? I don't care about warranty etc and I really like it so I'm not looking to get rid of it anytime soon. Just wondering if there are any major risks in doing it. Thanks.