I'm copying this from the thread on this in OD:
For the record, it was 39 items on my list. It was going very slow to drag all of the items, not to mention the problem with dragging across a few page-lengths... I know I'm not alone on this because I'm using a brand new computer on a fast connection, and also because it was reported by someone else (OD thread)...
I'm just posting this in hopes the feedback gets to the study creators...