A bunch of Dokeos users have reported problems with FCKeditor in Dokeos 1.8.5.
The first one is with the creation of links in Firefox 3 (somehow the JavaScript was wrong there). This one has already been fixed in preparation of the next version of Dokeos.
The other ones are all related to the management of special resources (flv, sounds, swf) which seem to be a little bit less reliable than in Dokeos 1.8.4.
Be reassured that we are working on this right now. Julio is in charge of upgrading FCKeditor to the latest stable version and re-applying our customisations, so the next version of Dokeos (which might be just a bug-fixes release to come soon) will fix all that.