So, my Wi-Fi is no longer working after installing ML (see thread here - http://forums.macrumors.com/showthread.php?t=1411516 if you have any suggestions, please post them) and I'm contemplating a clean install to see if it gets rid of the problem (along with a trackpad/keyboard problem I've had for about a year now that may or may not be a software issue). However, there are some things I'm not sure about: 1. Will I lose my iLife software? It's not saved on the MAS as I got my Mac before the MAS launched. I do have an Applications disc that came with the computer. 2. Can I just pull my iTunes library, iPhoto albums, and Pages documents from my Time Machine backups after I install? 3. I've obviously already installed ML, so I've lost the InstallESD file. To retrieve it, can I go into my last Lion backup and bring it back? 4. For the issue (s) I'm having, is it likely that the clean install will actually be effective?