Murraya Leaves Browning I Have A Murraya Hedge And It Has 3 Different Problems?

I have a Murraya hedge and it has 3 different problems? - murraya leaves browning

Murraya hedge and I have 3 different problems.Do know what they are and how to solve or avoid?

Problem 1: The leaves are yellow with a green difficancie veins.It something that I know.

Problem 2: The leaves are yellowing from the tip of the blade down.

Problem 3: There is something eating the leaves.

Photos of 3 problems: http://www.xanga.com/yahooanswerspicture ...