I have my OS and all my apps on a 120GB SSD. I keep all my data on separate internal drives. I do keep my user folder on my SSD, I have never moved it like some people do. I'd prefer to keep it on the SSD like the OS wants. But no data is saved to the SSD, I keep my itunes and iphoto library on the other drives. But I' noticing that the space on my SSD goes down every week. Last week it was at 91 GB, today its at 88.55 GB. I made notes of the four folders and their sizes last week. The only one that has really changed was the User folder, it went up 1GB. A few questions ... 1. What would make my User Folder go up 1GB if I'm not saving data to it? 2. Where has the other 1.5GB gone? I've used Onyx to clean out pref files and such but that only gained me back a little space. What is causing this storage loss?