Land Rover Repair: Repairs, calibration issue, speed bump

Question
When I drive over a speed bump I am experiencing a loud clicking sound from the rear of the vehicle and I am uncertain what it maybe, please help. Also a new air suspension compressor was installed in my vehicle in February 2010 and now I see my vehicle slightly lean towards the right, what may this be.

Answer
Leaning to one side (assuming it is a slight lean, not a collapse of the suspension on the right) is a calibration issue.  Any dealer or specialist with the T4 or Autologic system can calibrate the truck to stand properly.

For the loud click I suggest you shake the truck in a workshop while someone underneath looks for the source of noise.  There's no way for me to know what it may be but I am sure it's easily found in that manner