We have been experiementing first with Dokeos and now Chamilo. Every thing looked good except one which is creating a new database for every course. It is scary to see one database per course as it can cause lot of database related problems as more and more courses are added to the system. I saw that there is support for single database, but it is not recommeneded and may not work right. So please enhance the single database mode which is really important to us and I am sure for many other people too.