OP, I noticed you have a couple posts regarding being on AT&T's network. Are you sure you have an i9100, and not an AT&T variant, which is the SGH-I777? Or if you DO have an i9100, that you didn't flash a firmware meant for the SGH-I777? The most common reason I've seen for a non-functioning home button is flashing the wrong firmware.
Sent from my GT-I9100 using XDA
I never wanted to have a signature, but it seems I must. Please do not PM me directly for technical support. I mean it! No exceptions! Thank you.
Everyone (esPECIALLY n00bs) should read this