editor problem

I am suddenly having problems with editors. I had wysiwyg editor installed. Used CKEditor and TinyMce and disabled both trying to get to root of prob. Used all filters on code. Full HTML, Filtered HTML and even display suite code. Tried all variations of above and even straight text.
But since this morning any piece of code I touch in a block adds a backslash in front of a single or double quote.
I.E

<

div class=\"sidebarBlock\">

Membership?

Text stuff.

<div class=\"ReadMoreBlueBelow\">