I went from 5 GB total space to 355 Mb total space after switching to PG's CM10. I was having an issue where I wasn't getting so signal so I restored to stock with the unbrick guide, then rooted and re-installed it. I tried to fix this by going to stock and then just settle on one of the non-CM roms, but now when I run KDZ I get "fail to read upgrade file.... Please check HDD Disk free size. For Safety upgrade 3GBytes or more free space is required."