I just experienced my first "black screen of death" since jailbreakme was installed. iPhone 4 was totally unresponsive. Screen would not wake up, home and power buttons had no effect. Only by holding both home and power did it reset and show the following screen capture. (having trouble uploading from my iPad. Will try to attach later. It was my first experience with "Safe Mode". I must say that I've added and removed a number of programs since JBing and have only left the essentials on the phone. The last 2 added just prior to the Black Screen were SBsettings and Infinidock. I like and will leave infinidock but can probably live without SBsettings. I was worried when, after hard reset, instead of my usual lock screen wallpaper there appeared a black screen with a terminal looking smiley face. After sliding to unlock, the Safe Mode screen image appeared. After a respiring everything seems fine, so my worries were relatively short lived. Can anyone else shed some light on Safe Mode?