A very strange thing occurred yesterday. After months of enjoying FW 3.1.2 with the blacksn0w unlock (I'm using an iPhone bought in the UK, in Holland), my iPhone suddenly became very slow after losing the signal, which froze after that. Thought I reboot, but it came then stuck on the Apple logo, rebooting every few minutes. I thought a restore would do the trick. Ironically, the 3.1.3 update was released that day, so official Apple restore wouldn't work. Restored my iPhone with PwnageTool and unlocked it with blacksn0w. Problem stays! Once blacksn0w is installed, it turns slowly and when I open the settings pane it crashes after sometime, leaving me again in the Apple-logo-loop. The strange thing is everything works perfectly fine, when I restore and do not install blacksn0w. Installing it again causes it to go back in the loop, tried it several times. How could this happen out of the blue while enjoying blacksn0w since it was released? I was just using Safari while the signal dropped and crashed after that. Any thoughts?