Hi all- Currently running an imac Intel Core 2 duo, 4gb ram over here with OSX 10.6.8. We got it refurbished about a year ago, so I'd say its about 2 years old. System info says imac9,1 So here is the issue. It is running okay. No major problems. Once I think we had some itunes library issues and a permissions repair in disk utility did the trick. I've used windows and linux for most of my life and am familiar with defrag and other maintenance differences between windows and unix-based systems and I know that most utilities for mac are considered a waste, that macs take care of themselves. So things have slowed down a bit lately. For a 2-year-old computer that runs Digital Audio Workstations for me and adobe graphics programs for my roommate it might as well be bulletproof, but i'm used to tinkering... So i wanted to get to the bottom of what is going on. I didn't mess anything up, but I ran the verify disk function in disk utility and it says i need to repair my disk--invalid volume file count. So here are my questions: Is this a safe repair to perform? I back up regularly and use dropbox, but will my data be okay? Should I do this before upgrading to Lion, or will lion take care of it? Should a computer this old get lion?