Hi there. I've got the same pattern on my phals as in this thread. And I believe it's a virus. You would be surprised how identical it looks. I don't know how to add pictures in here. I lost many of my plants recently for exact same reason. I ordered more agdia tests to confirm but I do believe it's cymMV crap. See the similarity in pattern. On one of the pic there is some research done somewhere in Asia and the test for cymmv came out positive. I tested my plant and it was the same. And I lost most of my collection. I might be wrong but i need to share that with you guys so maybe we will finally get some decent knowledge on problems that most of us encounter at some point of growing orchids. What do You think from my pictures ?