Thanks Dyzzypxxy and WillC,
Dyzzypxxy - you are absolutely right - the plant was in desperate desperate desperate need of re-poting. The roots were going round and round. I now think that was the only problem leading to the leaf problem. I figured that I only purchased it about 6 months ago, that it was still ok in the pot it came in. Boy was I wrong. I will keep you posted as to how it does with its new, larger pot with fresh potting soil. Thanks again everyone for your feedback. Very appreciated.
Thanks,
Jason