"wind noise" in the central heating

i have a strange "wind noise" in the central heating. I woke up this morning thinking there was a large storm outside (as it sounded like a strong wind outside)..but seems it was coming from the central heating system. I also noticed a "water dripping" sound from within one of the radiators.
I'm reasoning that the water temperature was too hot (or the pump to fast - so that not enough heat was discharged during circulation) causing a superheating/steam to run round the system..and the dripping was the superheated steam condensing from the top of the radiator.
Or am i barking up the wrong tree??
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Before you do anything else, turn the system off, bleed the radiators and (if necessary) check the pressure and refill the system. The last part only applies to sealed & pressurised (i.e. modern) systems.
Christian.
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thanks,
what do you think the problem is??

only
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