With version 2.1 of Dropbox, I've made a much better effort at factoring-out all references to UDel-specific things (UDelNetID, appended mail domain on plain usernames, etc). Now it should be slightly easier for other institutions to customize the Dropbox interface to their particulars.
The minor version number was bumped due to a completely revised authenticator class structure. There were myriad suggestions from those who have downloaded and set up a Dropbox. The classes have been rewritten to be more modular in nature, with each subclass stored in its own file and loaded on-demand; more object-oriented, with the list of Dropbox admins now an inherited feature of the abstract base class NSSAuthenticator; and the addition of an IMAP-based authenticator (contributed by Scott Merrill).
So in the end, not much has truly changed in this release; your existing Dropbox site should work as-is, most likely. Make sure you glance at the Admin Guide, particularly the sections on the preferences file.