We are running FCK Editor Version 2.52. under the Provider 1.0.9 without any problems, i also integrated some pluguins like ImageMap...

This works fine!

That was simple. I downloaded the new Version from http://sourceforge.net/project/showfiles.php?group_id=75348 (Of course it was the 2.5.1 not 2.5.2 ;-)  ) and  replaced the "old" Files under "...\Providers\HtmlEditorProviders\Fck\FCKeditor" with all the new files of the 2.5.1 Version of FCK Editor. I was hoping to solve some problems with this, but not realy. I hope the next version of the provider will fix of the "bugs" and hopefully brings some options like better integration of plugins like the ImageMaps or the TemplateManger.

Seem that the 1.0.9 provider treats this like the "older" FCK Version... For me the plugins were more effective...  At the moment i try to bring the "Template Manager Plug" into my portal...

Plugins running at my portals are:

• ImgMap (Creation of Image Maps, very nice feature)
• Switchtoolbar
• CssEditor
• EmptySpace (inserts a non breaking space)
• ExtSymbols (for some  more special characters)
• CleanUp (html clean up)

No problem  :-) Would you let me know, if this works with your portal(s) too? 
I am busy at this moment, but if this is not very urgent i can pack a version of this (without the plugins) and post it here (if possible) in a few days...