I installed Jaunty Jackalope (Gnome) since it was Alpha6.
and I noticed that "Drag and Drop" any file or text between Gtk applications is slow and buggy !
I installed KDE, but the drag and drop works fine even when running Gtk application in KDE !
less than 5 days left for the official release, and the problem is not solved yet !!
I hope it'll be solved in the next update..