Our pool sprung a leak! It was a really big leak too - the size of a hammer!
...Actually, we decided the pool was not worth the cost of upkeep since we didn't really have enough time to spend in it. The pump was totally worthless (it's dead... and would cost more to repair than we can spend...) so we just put a hole in the side of the pool to drain it. Our plan is to sell the sides as scrap aluminum to see if we can get at least the cost of disposing the thing out of it. It was fun while we had it but... bye-bye pool! (We'll only kind of miss you...)