[Advice] 191 mb used up ?

Hey there

Every time I use Itunes, it tells me that I have 191 mb being used on my iphone apart from the stored mp3.
Does anyone know if it's normal or if there is any way that I can get this used space back?

I'm using a 1.13 jb iphone. So far I've jailbroken my iphone with zipphone and Ibrick (1.13 version).

thanks

well some say its a bug in itunes.
Have u tryed the BossTool to send some stuff from 1 partition to another ?