i had this problem a couple of days ago , and to get rid of it , i just made a clean restore .
today im connecting my phone to the pc , and what do i see? again , more than 6 GB of other . no music on the device .
(the only thing i can think of is - im using "general storage" on "i-fun-box" )
is there any chance that it can be the problem ? ( now the storage is only 900 mb full )