white-speckled leaves?

[K.Veren]

Hi everyone, I'm afraid I need your help again....
My roommate bought a small phalaenopsis orchid but she's afraid that it's not looking very healthy because the leaves are covered with thousands of small pits so it looks as though someone sand-blasted the plant and then lightly dusted it in flour. We've tried wiping the leaves off, and yet it retains its white powdery look, and the texture is undeniably rough, and doesn't look at all like my two plants which I presume are healthy.
I've checked the root system on her plant, but aside from a few dried up roots, all seems well; no root rot in sight. It's even growing new roots. could it be some sort of fungus? sunburn?

(sorry for my terrible cell phone quality picture)