How do I enable copy/paste on Firefox?

With the new GS text editor, firefox won't let me copy and paste anymore in my posts.

I found the firefox how-to guide on changing my configurations not helpful.

Does anyone know how to enable copy/paste in message posts with firefox?

This is a copy and paste from Notepad in Windows XP Home SP2.
Copied into the WYSIWYG editor in Firefox V1.5.0.11

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Apparently it worked for me with no problem in firefox 1.5 

I just copied this from Word.