Last night I jailbroke again, for the first time in ages. Redsn0w worked a charm, and I was Jailbroken in around 5 minutes. Before I did anything, I wanted SBSettings, then Winterboard. I installed SBSettings, and then got to the 'Reboot Device' screen in Cydia. After powering off, it went straight into a boot loop. I'm on a 2G (MB) running 3.1.2. I DFU'd out of it, and everything's fine now, but could anyone explain why that happened? It could've been the simultaneous installation of MobileSubstrate, or something else. I'd just like to know before I have to go through the whole restore & ersync thing again. Thx.