My power momentarily went out while I was working. Then it came back on. Lion started up all the applications that were running. Crossed my fingers about what it would bring up for my Xcode project... to no avail. It showed me the last version that I'd manually saved about 2 hours ago. I double checked my preferences in Xcode and "Auto-save" is set to "Always". So, does autosave actually work for anybody? Maybe there's something corrupt with my install? Or am I just failing to understand how the feature works?