Plant Disease?

First, I must explain the formatting of this post.  Flickr "upgraded" their site.  That's where I upload my photos to share. Since the upgrade I'm not able to get to my photos.  Howzdat for an upgrade?  Imagine, I pay for this service.  Okay, so I have had to resort to using Blogger's image uploader for today's post.  I know I must be doing something wrong, but I don't have the time, energy or desire to fuss with it.  The frustration is making me very unBuddhist-like. So here, as is, is my blog post for today. The captions on the right actually belong to the picture below it. UGGGHHH!!!!!

Most of my lemon plants have this funky, waxy thing happening on some of their leaves. Not sure what's happening, but I don't think it's a good thing.

This plant was hit first.  Now the affected leaves are kinda hard and stiff.

This plant recently had a growth spurt and about a dozen new leaves appeared.  Almost all of them have the start of the waxy build-up. 

Even this small calamansi plant has it on one of its four leaves.

I sprayed all of my plants with a mild soapy water mixture.  Hope it doesn't do more damage.