look into root and then in the folders - acct - proc - ... maybe more ... there are hundreds of files with zero kb maybe there are others as well you should look into it can we delete them? i looked into it via my pc via the APP Sambadroid this is a very good app to bring data from and to android devices from PC
Be careful! http://www.all-things-android.com/content/understanding-android-file-hierarchy (sometime a little googling is enough )
Hi: these folders in the root are useful, can not delete them. the "proc" is the linux state files; maybe you see the 0kb, but some of the node file, and android will recive the notifications through them.