Firefox 15 and FCKeditor

After upgrading to Firefox 15, I am having problems with website using FCKeditor rich text editor.

FCKeditor does not save the message content whether I compose a new message or reply to a message.  The option to “Switch to plain text editor” is also missing from the editor.

I did an update to Firefox 15.0.1 but still no luck.

I also tried my luck by upgrading to Firefox 16 beta but problems remain.

A quick googling shows that I am not the only one with the issue.  Support requests have been made website owners and the proposed solution is to upgrade to CKEditor which is the successor of FCKeditor.  For the time being, I have to use other web browsers to overcome this issue.