External links modified by Plone CMS or FCKEditor ?

Hello everyone,

I hope you can help me, because I am a novice in the use of Plone CMS. I'm having a problem since I started with this CMS and I can not solve the problem.

This problem occurs when editing a page (update) which contains external links (to an application on the same server and not to pages in Plone). If I make updates to the page in question and that I confirm via save button, links to these applications are then modified. Link pointing to these applications, Plone uploaded to the site address.

For example in the "page" which is on "http://nomserver/dossier/sousdossier/" link to application "application":
http://nomserver:8090/application/
will become
http://nomserver/dossier/sousdossier/:8090/application/

Thus I am forced to edit my links to redo manually. FCKeditor is the editor of Plone I am using

I installed a new version of FCKeditor (2.6.5.1), the problem still persists.

I also tried to install a local version of my Plone, with a copy of the db (Data.fs) and products and extensions. I then realized that the problem exist locally (with the old and the new version of FCKeditor)

Could you please help me because I can not find solutions to this problem very restrictive ....

Thank you for the help you could give me.