I just had a couple of lunch-time pints in my local 'spoons, the first did seem rather cold but I let it warm up and thought little of it, my second was also cold enough to freeze my hand and tongue. I then chanced upon one of their beer mats which proclaims "Temperature of all our beers a cool 1-3 C guaranteed", "every drought beer supper-chilled", "J D Wetherspoons - investing £15 million to improve the serving temperature of drought beer - making it cooler!", and on the reverse "the coldest beer in town", "CHILL OUT", every drought beer supper-chilled". Needles to say, it totally ruins the taste and I had to wait ages for it to warm up to a sensible drinking temperature.
Perhaps it is cheaper than employing staff who can care for live beer, and throwing away barrels which have not kept; then again perhaps it is simply to drive away real-ale drinkers so that they can concentrate on the more profitable 'lager' drinker.
Needles to say, I shall be voting with my feet.