Water Pump noises?

[TM]

For those of you w/ I-5 20v turbo experience:
What does a faulty water pump sound like?

I just had my timing belt changed and now I get this
whining noise similar to the sound of a turbodiesel big
rig spooling up its turbo. The noise is dependent on rpm
and does not sound like the turbo itself. This didn't happen
before the timing belt and water pump change. I had the
belt, idler pulley and water pump replaced along with the
front cam seal and main seal. The parts came from Rod at
TPC, so I can't imagine getting junk from him- belts were
Continental, water pump was a German brand with a metal
impeller.

Taka