Ajax not working in WP-Admin area

The edit the timestamp, dragging on widgets etc does not work on one on my wordpress websites, but another wordpress website on the same server doesnt have this problem. SO, it is this wordpress installation, not the server config.

My question is, how do I get the ajax features to work? I cannot edit the timestamps (thats the main reason for this post as i need to edit the timestamps).

Thanks in advance!