Hi all, Using Xcode tonight on my 2010 iMac running 10.7 (11A511), editing a preferences Plist file, and then the OS decides to completely crash. From the behaviour I believe it is Finder crashing completely, unable to select the application window, CMD-Tab shows nothing other than Finder and unable to launch applications etc. Forced to do a hard reset, the iMac is no longer bootable, having to restore from Time Machine as we speak. So I decided to continue my work on my secondary machine, A 2011 MacBook Air running 10.7 (11A2063) and editing the same plist file in Xcode, bang exact same symptoms, laptop is completely unresponsive. Luckily the Air booted after the hard reset, the iMac wasn't so lucky. Just wondering if anyone else has experienced this?