Memory usage classified under other

I have 5.77 GB in "other" used on my iPhone 4S memory. I can not

Figure out what other is. I have seen in diagnostic and usage ( in general-usage )

there is a bunch of diagnostics files to be sent to Apple that

I have turned off and is still sitting there. Might be 10 files in length

of text but I can't see it being over 5 gb.

Does anybody have ideas what other could be and how to figure it out.