Widgets never ends loading...(wordpress 3.1.4)

Hi i have a wordpress installation running both on local and on a server, the local version being the same that i upload to the server works fine, but the one i have on the serverhas a widget “issue” the y just don’t work i can grab them put them aside change the configuration but nothing happens i’m using wordpress 3.1.4, some idea?? Thanks a lot guys, keep the good work!