The last few mornings I've noticed a lack of hot water. My gas hot water heater is set on high and usually holds out fine for at least 2 showers. The last few mornings, however, the water doesn't seem to be near as hot and runs out quicker.
It's a sears model, built in 1988 I believe. There are no leaks or anything around it, but that's as far as my inspection went.
Andy