I came across an interesting utility app yesterday - PhoneClean. It's similar to CCleaner, and comes in Mac and PC versions and works with (apparently) all iPhone and iPad versions. It scans and then removes junk and temp files, and clears caches. Download to Mac and install, connect iOS device and begin scan. You then have the option to delete the junk files discovered. Decided to give it a try with my iPad 1 16GB, and freed up .75GB, without any problems, yet. I did a search, but couldn't find any other mention of this app, so I would be interested to know if anyone else has tried PhoneClean. Disclaimer: I have no connection with the makers of this app.