strongl --
The duplication of project calendars is usually one sign of project
corruption. I have seen this behavior dating back to Project 2000 when a
SQL Server database was used as a data repository for projects.
To eliminate the problem, the user should break all external links and then
save the project as either an .mdb file or an .xml file, and then delete the
enterprise project from the database. Then open the .mdb or .xml file and
save it as an .mpp file and close it. Finally, import it back into the
Project Server database using Tools - Enterprise Options - Import Project to
Enterprise. If this project has linked Risks, Issues, or Documents, refer
to the following FAQ for the steps the Project Server administrator should
follow to delete the project without deleting its SharePoint subweb:
http://www.projectserverexperts.com/Shared Documents/DeleteProjectWithoutSubweb.htm
Hope this helps.