I am on 4.0.1 still since I havent even had time updating to 4.2.1 with greenpoison, but this is pretty much that happened when this happened- I used the phone last night around at 50%, so I updated the "changes" in Cydia, so I moved on with browsing on safari for another hour until I fell asleep. Thinking back, I didnt turn off cydia last night in the multitask, since I thought maybe it ate my battery. I first plugged my phone to charge it up, and an hour after... The apple splash screen and it slowly shows the white spinner until it freezes. I did hard reseted the phone a few times to make sure I couldnt figure why it wouldnt come back. Could I be restarting it wrong? I was holding power+home for about 10 seconds, and the screen would go black and if it hit power, it would start back to the apple splash. I havent used the phone since last night @11pm, so its pretty strange. Any ideas anyone? Thanks!