need help please, just bought my n9... recharge it, plug it into my laptop to put some music... then (safely) removed it to try the head-set for the music, there was no music, no gallery pics, no videos !! everything was gone, tried to download off the web, an error msg went up : there is not enough memory !! so i plug it back but everything was there (on the PC),off the phone it was blank !! plz help, its so frustrating !!