[philrocks]

I had slight vibrations at higher speeds for a while, like 50+, then one morning, drove the car got to 30mph and it was vibrating quite violently, and got worse the faster I went.
This was my O/S drive shaft, with the car jacked, looking under the car at the driveshaft, as I rotated the wheel, I could see the drive shaft move up and down at a certain point in the rotation.

I got a certified used Volvo one, was about £300 incl fitting.