Beginner Gardening: What is wrong w/ my laurels?, 1 by SullenAfterglow

SullenAfterglow wrote:
Laurels were planted about 2 months ago in front yard flowerbed. There are 6 in total, and 2 (currently) seem to be afflicted with this mysterious browning. I do not know if this browning is caused by lack of water or some sort of disease.

The browning literally occurred overnight. Driving to the house, I noticed the spotting on the back of the leaves. We've been receiving brief rain showers every 3 days.

Is this a serious problem or something simple as watering.

http://fryedrice.com/laurel/SNV30866.jpg

http://fryedrice.com/laurel/SNV30869.jpg

http://fryedrice.com/laurel/SNV30870.jpg