Question

Since yesterday I can’t read and write the html in jsfiddle, field is empty…
I try with chrome, ff, safari, and have same result in private mode.
I try a Google search about this and found nothing. I am on mac os x 10.6.8.

Answer 1

http://jsfiddle.net/E4mz9/25/

They are saying that they are performing maintenance and that is why the box is not editable:

// Hi there,
//
// We're moving and improving the jsFiddle servers to create a better
// service for everyone.
//
// While that's happening - there is read only access only.
// You will be able to view fiddles but any editing will be lost.
//
// When migration of the site is complete, this temporary version of
// the database will be deleted to avoid misunderstandings. Your
// fiddles are safe, you just can't edit them right now.
//
// TL;DR
//   - jsFiddle is moving servers.
//   - For the next couple of hours:
//      - Save is disabled
//      - Registration is disabled
//
// Thanks for your patience,
//
// jsFiddle team.
//
// :D