Hi, My C5060z has gone crazy... 70% of the functions do not work, the mode dial is inoperable and I can't access menus. When I turn on the camera, the flash menu sometimes appears, while everything else freezes. I sent the camera back to Hong Kong while still under warranty, but the seller lost it for seven months and when it was eventually returned to me, the problem had not been fixed. I'd be most grateful for any clues as to what the problem could be. Thanks.