My Sony PDA crashed this weekend(you never think it will happen to you!) I had downloaded a theme for a new program (Z launcher) and when I installed it the screen locked up blank! No amount of soft resets would restore it, so I had to do the dreaded hard reset. I had no backup and had to manually restore all my programs and whatever data I could recover. It took about 4 hours of solid work and the 1st new thing I bought after I was finished was a backup program! In a way it was a good thing, as I now have all the latest versions of my programs installed. There were also a couple of programs that I didn't bother installing again, so that freed up some memory too.