It Has Just Stopped Vibrating, It Hasn't dropped or anything and the vibrating function is on. It Was Working When i first bought it but today is just stopped can any1 tell me how to sort it out.!!

Metal Gear Solid 4
Resistance 2
Little Big Planet
COD W@W
Rainbow Six Vegas 2
Naruto: Ultimate Ninja Storm
Socom: Confrontation
Army of Two
Bioshock
Brothers in Arms: hell’s Highway
Burnout Paradise
The Club
Clive Barker’s Jericho
Condemmed 2: Bloodshot
Conflict: Denied Ops
Dark Sector
Dead Space
Devil May Cry 4
Dragonball Z: Burst Limit
Enemy Territory: Quake Wars
Eternal Sonata
EyeCreate
Facebreaker
Fallout 3
Far Cry 2
Fifa 09
Fracture
Golden Axe: beast Ride
Gran Turismo 5: prologue
Grand Theft Auto IV
Guitar Hero: Aerosmith
Guitar Hero: World Tour
HAZE
The Incredible Hulk
Iron Man
James Bond: Quantom of Solace
Juiced 2: Hot Import Nights
Legendary
Lego Batman
Lego Indiana Jones