Our fridge does not make ice - Whirlpool Gold... Our fridge stopped making ice a few weeks ago;

Question

Our fridge stopped making ice a few weeks ago; we did not notice until last week when we emtyed the ice bucket - it was 1/2 full; after that it was no ice and we could not hear the water running into the ice-making-chamber - we usually could hear when it was running.
We checked the water filter, we checked the switch on the right side - it is on; the temp is '4'; the water from the dispenser is coming - what could be the problem? thanks, Zam Oyvetsky.
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