The Relog Experiment reports that, at a Canadian Association of Research Libraries meeting on institutional repositories at Access 2008, most attending libraries that used DSpace were reluctant to upgrade to 1.5 and were not using Manakin.
Here's an except that explains their reservations:
- customizations made to DSpace 1.4 will take a lot of programming time to move over to 1.5
- certain plug-ins and enhancements that are in heavy use in 1.4 have not yet been made available for 1.5
- administrators are evaluating other platforms and are not willing to invest the time in upgrading to 1.5 if they end up switching platforms
- programmers are hard to find, train and retain