1. Use Snipping Tool and capture an image
2. Ctrl-C
3. Try to paste image (Ctrl-V) into a confluence page in edit mode
4. Image seems to be copied án dis displayed in page but after saving instead of the image a "Broken Image" placeholder is shown. No attachment has been created.

Error only occurs with Firefox 22.0.
Works with Chrome 28.0.
Pasting images in IE 10 does not work at all.