jquery/jquery-ui — pull request #930 by sebastian-marinescu (2013-03-07 14:52:29+00:00)
Title: Check for disabled in "_mouseStart" & "_mouseDrag"

I had a situation where I needed to disable the sortable-widget inside a mousemove-callback after the delay started. It took me a while to realize it wasn't possible, because the disabled-option is only checked once on mousedown. This should fix it.