Hi, I am going travelling soon and would like to leave my iMac for my mum to use while I'm away. I currently have a 2TB portable hard drive for my time machine backup. Forgive me for sounding clueless, but should I just wipe the iMac, reinstall OSX for her to use clean, and then reinstall from my time machine backup say 6 months from now to get 'my iMac' back? I don't want any of my stuff on there in case she accidentally deletes things, she's not a confident Mac user at all and I want to make it as easy as possible for her. It's running pretty slow at the moment, so I'd be curious to see if a clean install can do anything for the performance anyway? Thanks!